Unlucky for some, incredibly it is the 13th edition of the quiz idea so haphazard that you feel it must have been scribbled down on the back of a cigarette packet in the pub, if only pubs had been open earlier in the year. Fifteen questions. Some of them are topical. Some of them are general knowledge. One will have anagrams and one will feature Kate Bush, and most of them are a tiny bit silly in some way. It’s just for fun; let us know how you get on in the comments. The Thursday quiz, No 13 1.UK NEWS: Ocado’s share price sunk to its lowest level in more than a year after it was forced to cancel thousands of orders because of… A shortage of workers due to them self-isolating because of being "pinged" by the NHS app A collision between some robots that started a fire A computer error meant that drivers were being sent to the wrong addresses by their Sat Navs A national hummus and quinoa shortage meaning they couldn"t fulfil any of their orders from Guardian readers Reveal 2.THE BRITISH WEATHER: The Met Office issued its first extreme heat warning for the UK as part of a new alert service. What level was the warning? Amber Bronze Red Level two Reveal 3.MUSIC: Hip-hop artist Biz Markie died recently, aged 57. He was at the centre of a landmark legal case when he used an unauthorised 20-second sample from an unlikely source on a record in 1991, and became the first person to be successfully sued for it. Which artist sued him? Leo Sayer Gilbert O’Sullivan Engelbert Humperdinck Kate Bush Reveal 4.SPORT: Tokyo 2020 is due to get under way properly tomorrow. Which four cities are due to be hosts of the next four winter and summer Olympics and Paralympics? Beijing, Madrid, Milano-Cortina, Los Angeles Beijing, Paris, Stockholm, Los Angeles Beijing, Paris, Stockholm, Brisbane Beijing, Paris, Milano-Cortina, Los Angeles Reveal 5.RETURN ON INVESTMENT: Talking of the Olympics, this week, one of the Games" most high-profile "Worldwide Olympic Partners™" said they wouldn"t be doing any Olympic-related advertising in Japan, as hosting the event was proving so unpopular. Which one? Toyota Coca-Cola Nintendo Samsung Reveal 6.COMPARATIVELY SPEAKING: Which of these indie legends usually associated with Manchester is the oldest? Shaun Ryder, Ian Brown, Johnny Marr or Bernard Sumner? Shaun Ryder Ian Brown Johnny Marr Bernard Sumner Reveal 7.GEOGRAPHY: This is the flag of the Crown Colony of Sarawak, which existed from 1946 to 1963. It is now part of which south-east Asian country? Plot twist – it is anagram time. Nil Hip Peps I? Insane Do I? Alas May I? A Lad Nth I? Reveal 8.IT"S PHILATELY GONE MAD: The world’s rarest stamp is returning to Britain permanently for the first time in 143 years. The stamp dealer Stanley Gibbons says it is thought to be – "gram for gram" – the most valuable manufactured item in the world, about 2.5 million times more valuable than… Gold The Koh-i-Noor diamond The Mona Lisa Trying to rent anywhere in London Reveal 9.ON THIS DAY: Mariner 1 was one of Nasa"s earliest attempts to flyby a planet. It launched on 22 July 1962 but the mission lasted only 294 seconds after the launch had to be aborted when it veered off course. What planet had Mariner 1 been aiming for? Mercury Venus Mars Mondas Reveal 10.ART FOR ART"S SAKE: A council in Essex insisted on the removal of an artwork by Gabriella Hirst called An English Garden because it referred to what? Britain"s early role in promoting the trans-Atlantic slave trade The Black Lives Matter movement Britain"s role in the partition of India and Pakistan in 1947 Britain"s nuclear tests in Australia Reveal 11.FLAGS: Everybody knows that the Welsh flag is one of the best in the world. It"s got a dragon on it, so who is going to argue with that? But whose dragon is it traditionally held to be? Cadwaladr, King of Gwynedd Edward I Saint David Iolo Morganwg Reveal 12.TRUE OR FALSE: Named after Gustav Ludwig Hertz, the hertz is the derived unit of magnetic flux in the International System of Units True False Reveal 13.HORSELESS CARRIAGES: In 1894 the "Concours du Petit Journal Les Voitures sans Chevaux" took place, which is often regarded as the world"s first competitive motor race. Contestants had to travel between which two French cities? Paris and Rouen Paris and Roubaix Paris and Nice Paris and Le Havre Reveal 14.MAKING BACON: Talking of cars and their carbon emissions, the climate impact of wild pigs around the world is equivalent to the greenhouse gas emissions of how many cars annually, according to new research? 30-50 250,000 1.1 million 4 million Reveal 15.AND FINALLY: While on the subject of feral hogs, parents in the US are complaining that watching Peppa Pig is doing what to their kids? Giving them British accents Turning them into vegetarians Making them splash in muddy puddles Making them question why Miss Rabbit appears to have about 1,057 jobs and all of them give her paid holidays, unionised workers" rights and healthcare cover.