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

Ex Input:
Sentence: 'a couple sitting on seats on a train'. How many words contain the letter 'z' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'an individual poses for a picture beside a bright window'. How many words contain the letter 'y' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'a man under a green awning holding a skateboard in his hand while facing a crowd of people'. How many words contain the letter 'm' in the sentence.

Ex Output:

1