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

Ex Input:
Sentence: 'a young girl plays tennis in a court with grass in the cracks'. How many words contain the letter 'w' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'computer and a monitor on a wooden desk next to a laptop'. How many words contain the letter 'm' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'a man riding skis on top of a snow covered slope'. How many words contain the letter 't' in the sentence.

Ex Output:

1