TASK DEFINITION: In this task, you're given a pair of sentences, sentence 1 and sentence 2, that contradict each other. Your job is to alter sentence 2 so that the pair agree with each other. Generated sentences must be short, with less than 15 words. New information can be introduced. Avoid using pronouns to confuse the subject of the sentence.
PROBLEM: Sentence 1: Two men wearing hats playing ultimate Frisbee. Sentence 2: Men playing football.

SOLUTION: Men playing frisbee.

PROBLEM: Sentence 1: A skier skiing down a large mountain Sentence 2: A person ice skating on a frozen lake.

SOLUTION: A skier is skiing.

PROBLEM: Sentence 1: A person is writing on a chalkboard in a empty classroom. Sentence 2: A woman is sweeping the floor.

SOLUTION:
There is a chalkboard in the room.