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

Ex Input:
Sentence: 'a woman sitting on top of a cement bench near a lake'. How many words contain the letter 'w' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'an untidy room with clothes bottles next to an oven'. How many words contain the letter 'a' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'a picture of a lot of luggage and some people'. How many words contain the letter 'd' in the sentence.

Ex Output:

1