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 under an umbrella holding a lit candle'. Is 'under' the longest word in the sentence?
Example Output: No

Example Input: Sentence: 'a group of people skiing in a line down a trail'. Is 'people' the longest word in the sentence?
Example Output: Yes

Example Input: Sentence: 'the kitchen is very clean and pristine appearing'. Is 'kitchen' the longest word in the sentence?
Example Output:
No