Q: 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'.
Passage: 'King was met with unusually harsh conditions in the Birmingham jail. An ally smuggled in a newspaper from April 12, which contained A Call for Unity, a statement by eight white Alabama clergymen against King and his methods. The letter provoked King, and he began to write a response on the newspaper itself. King writes in Why We Can't Wait: 'Begun on the margins of the newspaper in which the statement appeared while I was in jail, the letter was continued on scraps of writing paper supplied by a friendly black trusty, and concluded on a pad my attorneys were eventually permitted to leave me.''. Question: 'who was letter from birmingham jail written to'.
A:
True