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 chair a black desk a black gray and white cat'. Is 'black' the longest word in the sentence?
Example Output: Yes

Example Input: Sentence: 'man with skis standing on a skiing slope'. Is 'standing' the longest word in the sentence?
Example Output: Yes

Example Input: Sentence: 'a train traveling down tracks next to tall buildings'. Is 'buildings' the longest word in the sentence?
Example Output:
Yes