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 tall bird stands near the edge of a river', Sentence2: 'the zebra is standing behind a chain link fence'. Is the frequency of the word 'a' in two sentences equal?
Example Output: No

Example Input: Sentence1: 'two giraffes are walking through tall grass in open plains', Sentence2: 'a plate with a pizza and vegetables on it'. Is the frequency of the word 'through' in two sentences equal?
Example Output: No

Example Input: Sentence1: 'a brown bull is standing in his pen and some trees', Sentence2: 'a woman walks her bike past a city bus'. Is the frequency of the word 'a' in two sentences equal?
Example Output:
No