Question: Extract the answer to the question from the following context. Question: what phrase is in bracket? Context: Classical statistical mechanics requires the existence of h (but does not define its value). Eventually, following upon Planck's discovery, it was recognized that physical action cannot take on an arbitrary value. Instead, it must be some multiple of a very small quantity, the "quantum of action", now called the Planck constant. Classical physics cannot explain this fact. In many cases, such as for monochromatic light or for atoms, this quantum of action also implies that only certain energy levels are allowed, and values in between are forbidden.
Answer: but does not define its value

Question: Extract the answer to the question from the following context. Question: Who else tried asphalt but failed? Context: The first British patent for the use of asphalt/bitumen was 'Cassell's patent asphalte or bitumen' in 1834. Then on 25 November 1837, Richard Tappin Claridge patented the use of Seyssel asphalt (patent #7849), for use in asphalte pavement, having seen it employed in France and Belgium when visiting with Frederick Walter Simms, who worked with him on the introduction of asphalt to Britain. Dr T. Lamb Phipson writes that his father, Samuel Ryland Phipson, a friend of Claridge, was also "instrumental in introducing the asphalte pavement (in 1836)". Indeed, mastic pavements had been previously employed at Vauxhall by a competitor of Claridge, but without success.
Answer: Vauxhall

Question: Extract the answer to the question from the following context. Question: Which of the following countries does NOT operate airlines in this airport: Singapore, Germany or Thailand? Context: Flights are available from most countries, though direct flights are limited to mainly Thai and other ASEAN airlines. According to Eleven magazine, "In the past, there were only 15 international airlines and increasing numbers of airlines have began launching direct flights from Japan, Qatar, Taiwan, South Korea, Germany and Singapore." Expansions were expected in September 2013, but yet again are mainly Thai and other Asian-based airlines according to Eleven Media Group's Eleven, "Thailand-based Nok Air and Business Airlines and Singapore-based Tiger Airline".
Answer:
Germany