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 is walking down a main street', Sentence2: 'a bunch of people walking in a parade of some sort'. Is the frequency of the word 'man' in two sentences equal?
Example Output: No

Example Input: Sentence1: 'a brown horse standing behind a chain link fence', Sentence2: 'a skate boarder pauses at the top of a hill'. Is the frequency of the word 'of' in two sentences equal?
Example Output: No

Example Input: Sentence1: 'a group of people wearing jeans standing around a piece of luggage', Sentence2: 'a baseball player is smiling while catching a ball'. Is the frequency of the word 'a' in two sentences equal?
Example Output:
Yes