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: 'an elephant painting a picture with its trunk'. Is 'elephant' the longest word in the sentence?
Example Output: Yes

Example Input: Sentence: 'a bathroom has an above ground enclosed bathtub'. Is 'bathroom' the longest word in the sentence?
Example Output: Yes

Example Input: Sentence: 'a man is outside skating on a board on concrete'. Is 'concrete' the longest word in the sentence?
Example Output:
Yes