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 and woman talking in the kitchen'. Is 'kitchen' the longest word in the sentence?
Example Output: Yes

Example Input: Sentence: 'a group of men on a field playing baseball'. Is 'men' the longest word in the sentence?
Example Output: No

Example Input: Sentence: 'a yellow train that is going under a bridge'. Is 'bridge' the longest word in the sentence?
Example Output:
Yes