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 zebra standing alone chewing on a tree branch', Sentence2: 'a number of people holding umbrellas on a city street'. Is the frequency of the word 'branch' in two sentences equal?
Example Output: No

Example Input: Sentence1: 'a baby bird by itself in a nest made from straw', Sentence2: 'three sheep one grazing on grass while a dog stands behind them'. Is the frequency of the word 'by' in two sentences equal?
Example Output: No

Example Input: Sentence1: 'a little girl holding a hot dog and a drink', Sentence2: 'five people stand in a room with many laptops on the desks'. Is the frequency of the word 'a' in two sentences equal?
Example Output:
No