Question: Between 1939 and 1949, how many military officers and personnel were trained on the Evanston and Chicago campuses?
Sentence: Relations between Evanston and Northwestern were strained throughout much of the post-war era because of episodes of disruptive student activism, disputes over municipal zoning, building codes, and law enforcement, as well as restrictions on the sale of alcohol near campus until 1972.
Answer in sentence: no