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 couple of men riding on the backs of horses', Sentence2: 'a man standing in the ocean with a frisbee moving towards him'. Is the frequency of the word 'a' in two sentences equal?
Example Output: No

Example Input: Sentence1: 'a skate boarder pauses at the top of a hill', Sentence2: 'a kite hitting a door of an establishment'. Is the frequency of the word 'boarder' in two sentences equal?
Example Output: No

Example Input: Sentence1: 'a street scene with a tow truck and a car on the back', Sentence2: 'a small bus parked in a parking lot'. Is the frequency of the word 'in' in two sentences equal?
Example Output:
No