An estuary is a partially enclosed body of water where freshwater mixes with salt water from the ocean.

Which river forms an estuary south of the Namib Desert after flowing for over 2,200 km from its source at the Drakensberg Mountains in Lesotho? It is the longest river in the region, draining an area of 855,000 sq km.

What term is used for the main match official who ensures no rules are broken in sports like boxing, soccer and basketball? It derives from a Latin word meaning “to carry back" or "to notify”.

Notably seen in members of the Monstera genus, these leaves bear holes that let air pass through, allow for more absorption of light, and expel excess water as the leaf expands - all in all, a great aid for good ventilation. This feature might also remind one about certain incidents which took place at Hradcany Castle and Prague Castle, sparking the Hussite Wars and Thirty Years' War respectively. What is the ten-letter name of this leaf shape?

Smith played the role of Beatrice, the niece of Leonato and the cousin of Hero, in a 1965 TV production of which Shakespeare work? In the play, Beatrice and Benedick are tricked into confessing their love for each other.

Many frequently used idioms are often quoted partially, robbing them of context and at times altering the meaning.

Identify the better known part of the idiom which concludes with "...and fools rarely differ". In the absence of this conclusion, the idiom is often used by people to emphasise a coincidence and praise themselves while seemingly praising others.

Which artist is fifth from left in the Last Supper collage? Her body of work - in the abstract and figurative styles - includes several portraits, the most notable being that of JFK's, housed at the “America's Presidents” section of the Smithsonian. She was the first American artist to take on the role of artists' critic, writing extensively about the art world from the 1950s.

RAS syndrome is the redundant use of one or more of the words that make up an acronym in conjunction with the abbreviated form. A frequent victim of this syndrome is what device whose origins can be traced back to a self-operating "deposit box" invented by Armenian-American Luther Simjian?

In 1983, two research groups independently discovered the causative agent behind "an exotic new disease" that compromised the immunity of patients leading them to develop conditions like lymphadenopathy or Kaposi's sarcoma. What infectious agent did they discover, a frequent victim of the RAS syndrome?

Identify this leaf shape with a wide, rounded apex and narrow, thin base. Commonly seen in barberry species, it takes its name from a word that originally meant a long, flat piece of wood used to mix, spread, turn or lift material. In modern usage, it refers to a kitchen tool with a broad tip that serves a similar purpose.

Which Prime Minister of the UK was hosted by George W Bush at Camp David in 2007? Bush gifted him an apt custom-made bomber jacket to mark the occasion.

Which Hindi psychological horror film (6) features Radhika Apte as a talented artist who develops a particular anxiety disorder following a traumatic incident in her life? She develops a 'fear' of being in places from which it is hard to escape or receive help.

Maggie Smith starred alongside Laurence Olivier in a 1965 film adaption of which Shakespeare work? She played the role of Desdemona, a Venetian beauty who enrages her father after she elopes with the titular character.

This type of doughnut or fried bread is named so because it resembles certain large, flappy anatomical parts of an animal which is found in the wild only in Asia and Africa. What is it called? Two-word answer.

The Crafts of India line featured sets overlaid with motifs using what form of embroidery that evolved as a craft to stitch patchwork cloth from rags? This technique native to the Bengal region has now evolved from creating quilts, dhotis, and sarees to decorating kurtas, churidars, or other traditional wear.

Identify this type of structure (8), which is open on all four sides and topped with a large roof to protect from the elements. This kind of tent-like building is also built to host large events like weddings or banquets.

Legion, ThinkPad, and Yoga are product lines by which Chinese company? With a 24% market share, it is the world's largest personal computer vendor by unit sales.

Which river forms the world's longest estuary at the Kara Sea between the Gyda and Yamal peninsulas? It flows for over 5,400 km from its source in the Altai Mountains, making it the world's 7th longest river system.

This symbol was unfurled by the World Peace Association in 1938 to represent all humanity. It influenced a famous 1978 creation, designed at the request of Harvey Milk, which later paved the way for a class of symbols which represent the various groups within a particular community. What term (5,4) is used to refer to such symbols?

Smith played the role of Rosalind in a 1977 stage adaptation of which Shakespeare work? Rosalind, along with her cousin Celia, flee from Duke Frederick's court to the Forest of Arden, where most of the story is set.

Envy, Pavilion, Spectre are product lines by which American company? The garage of its two eponymous founders has a plaque recognising it as the "Birthplace of Silicon Valley”.

Which artist is fourth from left in the Last Supper collage? She developed a powerful form of abstract painting late in life and was known for producing brilliantly coloured and richly patterned works intimately connected to the natural world. These were described as being a cross between Byzantine mosaics and the pointillist works of Georges-Pierre Seurat.

What is the fandom name of this English singer, a pun on a derogatory term used to refer to someone engaging in a form of transactional monetary gain? These fans presumably live by the mantra "Love Me Like You Do"!

Identify this type of structure (6), which typically has an open side facing a beach or a pool. This kind of cabin is used for lounging or changing clothes, and the term is also used for beachside hotel rooms and restaurant layouts.

This one's All About That (Fan) Bass! What is the fandom name of this American singer which might remind one of the main antagonist in a popular media franchise owned by Hasbro and Takara Tomy?