Definition: In this task, you're given a question, along with a context passage. The passage will not have a direct answer to the question, but can include some information and a clue for the answer. Assuming you can only obtain information about one entity in the passage, your job is to determine whether information from the passage can be used to answer the question. Indicate your choice as `a` for Yes or `b` for No.
Input: Question: When was the periodical that Brandenburg became  a contract photographer for in 1978 first published? Passage:Jim Brandenburg was born and raised in Luverne, Minnesota in the farms and prairies of Southwestern Minnesota, USA. After studying at Worthington Community College, he went on to attend the University of Minnesota Duluth, where he majored in art history and worked for the local public television station. Upon graduating, he returned to Worthington, Minnesota and began working as a photojournalist for the Worthington Daily Globe. Within months, he began submitting work to the National Geographic Society as a freelance photographer, and in 1978 he became a contract photographer for National Geographic Magazine. Additionally, his photography has been published in a number of National Geographic Society books including "Journey Into China", "Heart of a Nation" and "Discovering Britain and Ireland", in which his photos of the Highlands in Scotland were featured.


b