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 large clock mounted in the face of a building', Sentence2: 'a boy and a girl playing with frisbee in the lawn'. Is the frequency of the word 'a' in two sentences equal?
Example Output: Yes

Example Input: Sentence1: 'a group of young boys standing behind two microphones', Sentence2: 'a group of people and cow outside of a hut'. Is the frequency of the word 'a' in two sentences equal?
Example Output: No

Example Input: Sentence1: 'a group of elephants stand in grass along a large body of water', Sentence2: 'three wine glasses partially filled with red wine'. Is the frequency of the word 'grass' in two sentences equal?
Example Output:
No