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 cow standing outside of an abandoned structure', Sentence2: 'a zebra walking next to a crocodile near water'. Is the frequency of the word 'a' in two sentences equal?
Example Output: No

Example Input: Sentence1: 'various pastries on display on shelves in a store', Sentence2: 'a tennis player with a racket and a ball'. Is the frequency of the word 'ball' in two sentences equal?
Example Output: No

Example Input: Sentence1: 'a train is going down a grassy train track', Sentence2: 'a large truck with huge tires made for going through sand dunes'. Is the frequency of the word 'sand' in two sentences equal?
Example Output:
No