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 picture of big ben in the london skyline', Sentence2: 'two mallards float and drink water in a shallow pool'. Is the frequency of the word 'a' in two sentences equal?
Example Output: Yes

Example Input: Sentence1: 'a child with a hat that is standing in the grass', Sentence2: 'there is a green vase with lots of flowers'. Is the frequency of the word 'lots' in two sentences equal?
Example Output: No

Example Input: Sentence1: 'a long train moving through a wooded area', Sentence2: 'a guy holding up a round item near his face'. Is the frequency of the word 'face' in two sentences equal?
Example Output:
No