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 small child excitedly holds a kite over her head'. Is 'head' the longest word in the sentence?
Example Output: No

Example Input: Sentence: 'a woman riding a skateboard across a cement surface'. Is 'skateboard' the longest word in the sentence?
Example Output: Yes

Example Input: Sentence: 'tourists in rain gear at an observation post in a forest'. Is 'observation' the longest word in the sentence?
Example Output:
Yes