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 group of people standing behind a line of parked motorcycles', Sentence2: 'a double decker bus driving down the street'. Is the frequency of the word 'of' in two sentences equal?
Example Output: No

Example Input: Sentence1: 'a sign in front of a construction site', Sentence2: 'there is a green vase with lots of flowers'. Is the frequency of the word 'a' in two sentences equal?
Example Output: No

Example Input: Sentence1: 'a vase with a bird on it and a matching wineglass with flowers on it', Sentence2: 'this is a tray with food and a drink on it'. Is the frequency of the word 'vase' in two sentences equal?
Example Output:
No