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

Example Input: Sentence1: 'two people are playing a tennis video game on a projection screen', Sentence2: 'two baseball players warming up before a game'. Is the frequency of the word 'a' in two sentences equal?
Example Output: No

Example Input: Sentence1: 'a game of tennis is being played on a court as an audience looks on', Sentence2: 'many giraffes in a field near different flowers'. Is the frequency of the word 'giraffes' in two sentences equal?
Example Output: No

Example Input: Sentence1: 'a man sitting on a sofa with a laptop', Sentence2: 'a pretty young lady greeting a zebra at a zoo'. Is the frequency of the word 'young' in two sentences equal?
Example Output:
No