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

Ex Input:
Sentence: 'the two ladies was sitting on the sofa'. How many words contain the letter 'l' in the sentence.

Ex Output:
1

Ex Input:
Sentence: 'a pair of feet wearing slippers pointed at the floor'. How many words contain the letter 'e' in the sentence.

Ex Output:
5

Ex Input:
Sentence: 'a young boy holds a baseball bat while a man stands next to him'. How many words contain the letter 'p' in the sentence.

Ex Output:
0