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 portable toilet outside by an iron fence'. Is 'portable' the longest word in the sentence?
Example Output: Yes

Example Input: Sentence: 'a calico cat looking out of a window'. Is 'a' the longest word in the sentence?
Example Output: No

Example Input: Sentence: 'a bathroom with a shower toilet and sink'. Is 'sink' the longest word in the sentence?
Example Output:
No