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

[EX Q]: Sentence: 'a commuter train near a platform with no one on it'. How many words contain the letter 'z' in the sentence.
[EX A]: 0

[EX Q]: Sentence: 'two animals are walking along in a field'. How many words contain the letter 'y' in the sentence.
[EX A]: 0

[EX Q]: Sentence: 'baseball player in a white uniform swinging at a ball'. How many words contain the letter 'a' in the sentence.
[EX A]:
6