Definition: In this task you will be given a question and a passage. You need to determine if the answer to the question is contained in the passage. If the answer can be found in the passage you should output 'True'. If the answer cannot be found in the passage you should output 'False'.
Input: Passage: 'B is produced in nature only by some prokaryotes (certain bacteria and archaea); it is not made by any multicellular or single-celled eukaryotes. It is synthesized by some gut bacteria in humans and other animals, but humans cannot absorb the B made in their guts, as it is made in the colon which is too far from the small intestine, where absorption of B occurs. Ruminants, such as cows and sheep, absorb B produced by bacteria in their guts. For gut bacteria of ruminants to produce B the animal must consume sufficient amounts of cobalt.'. Question: 'which vitamin is produced by bacteria in the colon'.

True