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

Ex Input:
Sentence: 'a little boy that is sitting near two birds'. How many words contain the letter 'm' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'a black and white photo of a very crowded tropical beach'. How many words contain the letter 'p' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'group of horses in a field with a pinto in the foreground'. How many words contain the letter 'h' in the sentence.

Ex Output:

3