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

Ex Input:
Sentence: 'a man walking with rolling luggage and many bags'. How many words contain the letter 'g' in the sentence.

Ex Output:
4

Ex Input:
Sentence: 'two people riding on the back of a large elephant'. How many words contain the letter 't' in the sentence.

Ex Output:
3

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