Can we draw the following hypothesis from the context?

Context:

Brooklyn Borough Hall featured a Who's Who in New York's literary community during the second annual Brooklyn Book Festival. According to Brooklyn Borough President Marty Markowitz, the borough's zip code 11215 boasts more authors than anywhere else in the country. It appeared to be the case on Sunday. More than 100 authors were featured at the day-long event, including The Basketball Diaries writer Jim Carroll, former M*A*S*H star Mike Farrell, author and illustrator Mo Willems, Jack Kerouac's sometime lover and National Book Critics Circle Award recipient Joyce Johnson and PEN American Center President Francine Prose.

Hypothesis: The Brooklyn Book Festival is held in Brooklyn Borough every year.
yes