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 mototcyclist makes his way down a dirt road'. Is 'mototcyclist' the longest word in the sentence?
Example Output: Yes

Example Input: Sentence: 'a person sitting with a child wearing a tie'. Is 'person' the longest word in the sentence?
Example Output: No

Example Input: Sentence: 'a couple of large giraffe standing in a field'. Is 'couple' the longest word in the sentence?
Example Output:
No