In this task, you need to answer 'Yes' if the given word is the longest word (in terms of number of letters) in the given sentence, else answer 'No'. Note that there could be multiple longest words in a sentence as they can have the same length that is the largest across all words in that sentence.

Example Input: Sentence: 'a man in uniform is running on the field'. Is 'running' the longest word in the sentence?
Example Output: Yes

Example Input: Sentence: 'two cats are lying down on a chair'. Is 'chair' the longest word in the sentence?
Example Output: Yes

Example Input: Sentence: 'a young boy playing whiffle ball in the grass'. Is 'playing' the longest word in the sentence?
Example Output:
Yes