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 cat staring at two white birds in a grassy area'. Is 'white' the longest word in the sentence?
Example Output: No

Example Input: Sentence: 'several bunches of carrots and several bunches of cauliflower'. Is 'cauliflower' the longest word in the sentence?
Example Output: Yes

Example Input: Sentence: 'a woman walking on a sidewalk past a group of parked trains'. Is 'sidewalk' the longest word in the sentence?
Example Output:
Yes