Given the task definition and input, reply with output. 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.

Sentence 1: A man in a blue button-down shirt and holding a knife grins at a woman while standing in front of a white and black cake while another man in a black shirt stands behind him. Sentence 2: Several young people are gathered at a birthday celebration while the celebrant is ready to cut his cake

A man grins at a women n front of a cake while a man stands behind him.