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

Example 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?
Example Output: Yes

Example Input: Sentence1: 'a white plate topped with lots of different vegetables', Sentence2: 'a large fluffy cat sitting inside of a desk drawer'. Is the frequency of the word 'cat' in two sentences equal?
Example Output: No

Example Input: Sentence1: 'a man in white shirt and black shorts playing tennis', Sentence2: 'a young man welkin a bike down a street next to tall buildings'. Is the frequency of the word 'a' in two sentences equal?
Example Output:
No