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 coach watches on as a pitcher pitches', Sentence2: 'two men boogie boarding on a wave'. Is the frequency of the word 'pitcher' in two sentences equal?
Example Output: No

Example Input: Sentence1: 'a man flying through the air while riding a skateboard', Sentence2: 'a man taking a stack of clothes off of a bed'. Is the frequency of the word 'bed' in two sentences equal?
Example Output: No

Example Input: Sentence1: 'a brown bull is standing in his pen and some trees', Sentence2: 'a dog sits next to bathtub in a bathroom'. Is the frequency of the word 'a' in two sentences equal?
Example Output:
No