You will be given a definition of a task first, then some input of the task.
In this task, you're given a question, along with a context passage which has extra information available on certain terms mentioned in it, i.e., the proper nouns in the passage. Your job is to determine whether information from more than one term is needed to answer the question. Indicate your choice as 'a' for Yes or 'b' for No.

Question: Does Medford or Concord have a larger population? Passage:He was born in Boston, the son of Daniel Parker, a goldsmith, and Margaret (nee Jarvis) Parker. He was descended from John Parker, of Bideford, Devon, who emigrated to America in 1629 and whose children settled in Charlestown. After preparation at the Latin Grammar School, he entered Harvard at the age of fourteen and graduated in 1786 with high honors. For a short time he taught at the Latin School. Then, after studying law and being admitted to the bar, he moved to Castine, in what was later the state of Maine. There he set up his law practice, later moving to Portland and holding several local offices. On June 17, 1794, he married Rebecca Hall, daughter of Joseph Hall of Medford, a descendant of John Hall who settled in Concord in 1658. They had eight children. He was a member of the Brattle Street Church.

Output:
a