premise: Johnson College Prep is a public four-year charter high school located in the Englewood neighborhood on the south side of Chicago, Illinois, United States. It is a part of the Noble Network of Charter Schools. The school is named for African-American businessman and founder of the Chicago-based Johnson Publishing Company John H. Johnson and his wife Eunice Johnson.
hypothesis: "Prep" is a common abbreviation for "preparatory".
reason: Prep is a common abbreviation for preparatory, so it's correct. Now, I'm still not quite clear to what extent we're allowed to reach beyond the context to words the AI may or may not know, but if the purpose is training it in human thinking than it's good for it to know basic abbreviations like that, which it seems not to.