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 train going through town via railroad', Sentence2: 'a parent is pulling their child down the ski slope'. Is the frequency of the word 'a' in two sentences equal?
Example Output: Yes

Example Input: Sentence1: 'a table full of half eaten food and silverware', Sentence2: 'a row of parked motor cycles sitting on the side of a street'. Is the frequency of the word 'a' in two sentences equal?
Example Output: No

Example Input: Sentence1: 'a white tile bathroom with double sinks and two mirrors', Sentence2: 'elephants wading in shallow water on a gloomy day'. Is the frequency of the word 'a' in two sentences equal?
Example Output:
Yes