In this task, answer 'Yes' if the frequency of the given word in the two sentences is equal, else answer 'No'.

Example Input: Sentence1: 'some little elephants standing around a few trees', Sentence2: 'a snowboarder is upside down in the air on a wooded snowy slope'. Is the frequency of the word 'a' in two sentences equal?
Example Output: No

Example Input: Sentence1: 'a number of people holding umbrellas on a city street', Sentence2: 'people approach and order at a red food truck'. Is the frequency of the word 'a' in two sentences equal?
Example Output: No

Example Input: Sentence1: 'three slim metal vases with flowers in them', Sentence2: 'two giraffes side by side looking in the same direction'. Is the frequency of the word 'in' in two sentences equal?
Example Output:
Yes