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 standing on a sidewalk under a red no crossing sign'. Is 'sidewalk' the longest word in the sentence?
Example Output: Yes

Example Input: Sentence: 'an older woman playing frisbee in the grass with a young boy'. Is 'young' the longest word in the sentence?
Example Output: No

Example Input: Sentence: 'a dessert plate sits on top of a table'. Is 'a' the longest word in the sentence?
Example Output:
No