Given Sentence 1 and Sentence 2, indicate your answer as yes when the two sentences clearly agree or clearly disagree with each other. If the relationship cannot be determined, answer with 'no'.

Ex Input:
A group of people in black outfits drinking beer. <sep> People drink a beverage.

Ex Output:
yes

Ex Input:
A woman in a red shirt looks at a map while with a view of a river and several boats in the background. <sep> A woman looks at a map outdoors, a river and boats are behind her.

Ex Output:
yes

Ex Input:
A man playing a piano <sep> The man's hands are on the keys of a piano.

Ex Output:
yes