In 1663 at the Archbishop of Canterbury's residence, Lambeth Palace, a Gothic hammerbeam roof was built to replace that destroyed when the building was sacked during the English Civil War. Also in the late 17th century, some discrete Gothic details appeared on new construction at Oxford University and Cambridge University, notably on Tom Tower at Christ Church, Oxford, by Christopher Wren. It is not easy to decide whether these instances were Gothic survival or early appearances of Gothic revival.
What is the name of the Archbishop of Canterbury's residence?
Lambeth Palace

While LEDs have the advantage over fluorescent lamps that they do not contain mercury, they may contain other hazardous metals such as lead and arsenic. Regarding the toxicity of LEDs when treated as waste, a study published in 2011 stated: "According to federal standards, LEDs are not hazardous except for low-intensity red LEDs, which leached Pb [lead] at levels exceeding regulatory limits (186 mg/L; regulatory limit: 5). However, according to California regulations, excessive levels of copper (up to 3892 mg/kg; limit: 2500), lead (up to 8103 mg/kg; limit: 1000), nickel (up to 4797 mg/kg; limit: 2000), or silver (up to 721 mg/kg; limit: 500) render all except low-intensity yellow LEDs hazardous."
What LEDs are considered safer than any other?
low-intensity yellow LEDs

Today, thanks to Paris' cosmopolitan population, every French regional cuisine and almost every national cuisine in the world can be found there; the city has more than 9,000 restaurants. The Michelin Guide has been a standard guide to French restaurants since 1900, awarding its highest award, three stars, to the best restaurants in France. In 2015, of the 29 Michelin three-star restaurants in France, nine are located in Paris. These include both restaurants which serve classical French cuisine, such as L'Ambroisie in the Place des Vosges, and those which serve non-traditional menus, such as L'Astrance, which combines French and Asian cuisines. Several of France's most famous chefs, including Pierre Gagnaire, Alain Ducasse, Yannick Alleno and Alain Passard, have three-star restaurants in Paris.
How many 3 star Michelin restaurants were in France in 2015?
29