premise: Several people, some with umbrellas, milling about on an urban street near a white building with a mailbox and newspaper boxes in front of it, and a street sign that says "Park Ave". hypothesis: Several people are on an urban street with a sign that says "Park Ave.".
entailment: "Several people, some with umbrellas, milling about on an urban street near a white building with a mailbox and newspaper boxes in front of it, and a street sign that says 'Park Ave'" is the long version of "Several people are on an urban street with a sign that says 'Park Ave.".