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

Ex Input:
Sentence: 'several ties hang from a bar in a closet'. How many words contain the letter 'e' in the sentence.

Ex Output:
3


Ex Input:
Sentence: 'man and woman wearing all red standing in a snowy field'. How many words contain the letter 'k' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'a white bench on a cliff by the sea shore on a sunny day'. How many words contain the letter 'k' in the sentence.

Ex Output:

0