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 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 man stands in front of some railroad tracks', Sentence2: 'two men standing in front of a large screen with white controllers'. Is the frequency of the word 'a' in two sentences equal?
Example Output: Yes

Example Input: Sentence1: 'a bird with a fuzzy top knot sitting on a branch', Sentence2: 'a tall bird stands near the edge of a river'. Is the frequency of the word 'a' in two sentences equal?
Example Output:
No