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

Ex Input:
Sentence: 'a parked blue and white motorcycle with a black seat'. How many words contain the letter 'd' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'a bearded man sits on a couch with an electronic device in his hand'. How many words contain the letter 'e' in the sentence.

Ex Output:
3


Ex Input:
Sentence: 'a cake beside a knife on a counter'. How many words contain the letter 'y' in the sentence.

Ex Output:

0