In this task, you need to count the number of words in a sentence that contain the given letter

[EX Q]: Sentence: 'three zebras are shown in a black and white photo'. How many words contain the letter 'y' in the sentence.
[EX A]: 0

[EX Q]: Sentence: 'several people and a dog riding on a small boat'. How many words contain the letter 'l' in the sentence.
[EX A]: 3

[EX Q]: Sentence: 'an airplane with propellers turning in an airport'. How many words contain the letter 's' in the sentence.
[EX A]:
1