Here's a short story:

Established originally by the Massachusetts legislature and soon thereafter named for John Harvard (its first benefactor), Harvard is the United States' oldest institution of higher learning, and the Harvard Corporation (formally, the President and Fellows of Harvard College) is its first chartered corporation. Although never formally affiliated with any denomination, the early College primarily trained Congregationalist and Unitarian clergy. Its curriculum and student body were gradually secularized during the 18th century, and by the 19th century Harvard had emerged as the central cultural establishment among Boston elites. Following the American Civil War, President Charles W. Eliot's long tenure (1869–1909) transformed the college and affiliated professional schools into a modern research university; Harvard was a founding member of the Association of American Universities in 1900. James Bryant Conant led the university through the Great Depression and World War II and began to reform the curriculum and liberalize admissions after the war. The undergraduate college became coeducational after its 1977 merger with Radcliffe College. (End of story)

Provide your best guess for the following question. Give ONLY the guess, no other words or explanation.

For example:

Guess: <most likely guess, as short as possible; not a complete sentence, just the guess!>

Here are a few examples of questions and answers:

Question: When did Harvard become coeducational?
Guess: 1977

Question: What was it a founding member of?
Guess: Association of American Universities

Question: Who was it originally established by?
Guess: Massachusetts legislature

Question: Who led the university through the Depression and World War II?
Guess: James Bryant Conant

Question: Was it named after someone?
Guess: Yes

Question: Who?
Guess: John Harvard

Question: Who was he?
Guess: its first benefactor

Question: Was Harvard formally affiliated with any denomination?
Guess: No

Question: Which president transformed it into a modern research university?
Guess: President Charles W. Eliot

Question: Which college did it merge with?
Guess: Radcliffe College

Question: Is it the 3rd oldest university in the US?
Guess: No

Question: How old is it?
Guess: unknown

Question: Is it the oldest higher learning institution in the US?
Guess: Yes

Question: Who did the early college primarily train?
Guess: Clergy

Question: What kind of clergy?
Guess: Congregationalist and Unitarian clergy

Question: When was the student body pretty much secularized?
Guess: 18th century

Now answer the following question in the same format.

Question: Who was it a central cultural establishment among?

Elites