Question: When was the athletic conference formed that included the 1987 San Diego State Aztecs as a member?
Sentence (from "Western Athletic Conference"): The WAC covers a broad expanse of the western United States, with member institutions located in Arizona, California, New Mexico, Utah, and Washington, along with the "non-western" states of Missouri and Illinois (traditionally associated with the Midwest), as well as Texas (traditionally associated with the Southwest).
Relevant evidence: No