In this task, answer 'Yes' if the frequency of the given word in the two sentences is equal, else answer 'No'.

Ex Input:
Sentence1: 'a lady flies a kite with double strings into a big blue sky', Sentence2: 'a airplane that is flying in the sky'. Is the frequency of the word 'sky' in two sentences equal?

Ex Output:
Yes

Ex Input:
Sentence1: 'a stop sign sits in front of a building', Sentence2: 'two people dressed in costume advertising while two others ride a horse'. Is the frequency of the word 'a' in two sentences equal?

Ex Output:
No

Ex Input:
Sentence1: 'the surfers are sitting on their boards on the beach', Sentence2: 'a white street sign sitting on the side of a driveway'. Is the frequency of the word 'on' in two sentences equal?

Ex Output:
No