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

Ex Input:
Sentence: 'a man sits on a bench with a dog in lap reading'. How many words contain the letter 'x' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'the beach has six open umbrellas on poles'. How many words contain the letter 'g' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'a close up view of a green plant with very green leaves'. How many words contain the letter 'r' in the sentence.

Ex Output:

3