Detailed Instructions: 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.
Problem:Question: How many children does the artist have who Cantrell worked as a professional backing vocalist for in the late 1990s? Passage:In the late-1990s, Cantrell established as a professional backing vocalist for artists such as Sean "Puffy" Combs. In 1999, she became member of the girl band 8th Avenue, a protege of singer Teddy Riley. While the band recorded several songs and appeared on Blackstreet's 1999 album Finally, their material was left unused after Riley left Blackstreet to reform his previous group Guy and Blackstreet were subsequently dropped by Interscope Records, also leading to 8th Avenue's disbandment. Soon after, Cantrell was introduced by both a dancer friend and R&B singer Usher to Red Zone Entertainment head, music producer Tricky Stewart. Stewart originally wanted her to become a member of his girl group 321, but soon offered Cantrell to work with her as a solo artist following a fruitful recording session. Cantrell subsequently moved in with Stewart and his girlfriend in their Atlanta house, and was promptly placed with Arista Records head Antonio "L.A." Reid who offered the singer a contract with the company after hearing one song she wrote and sang in front of him and his staff. After a bidding war with several different labels, Reid's bid was the highest, prompting Cantrell to sign with them.

Solution:
a