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

Ex Input:
Sentence: 'the view from the top of a ski slope'. How many words contain the letter 'r' in the sentence.

Ex Output:
1

Ex Input:
Sentence: 'a man and woman holding electronic devices in their hands'. How many words contain the letter 'e' in the sentence.

Ex Output:
3

Ex Input:
Sentence: 'two women ride on an elephant led by a guide'. How many words contain the letter 'z' in the sentence.

Ex Output:
0