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 double decker bus parked with its door open', Sentence2: 'three yellow flowers in clear vases on a table'. Is the frequency of the word 'double' in two sentences equal?
Example Output: No

Example Input: Sentence1: 'people in a cactus garden standing on a stone walkway', Sentence2: 'young school boys smiling and posing on a stone wall'. Is the frequency of the word 'stone' in two sentences equal?
Example Output: Yes

Example Input: Sentence1: 'many people rowing a boat and surfing side by side', Sentence2: 'two giraffes walk across the planes with shrubbery in the background'. Is the frequency of the word 'by' in two sentences equal?
Example Output:
No