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 man walking in front of a grand building', Sentence2: 'a white street sign sitting on the side of a driveway'. Is the frequency of the word 'a' in two sentences equal?
Example Output: Yes

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

Example Input: Sentence1: 'highway road sign announcing exit ahead for vehicle traffic', Sentence2: 'a cup of soup with some type of small biscuits beside it'. Is the frequency of the word 'biscuits' in two sentences equal?
Example Output:
No