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

Ex Input:
Sentence: 'an elephant standing on a green grass area'. How many words contain the letter 'm' in the sentence.

Ex Output:
0

Ex Input:
Sentence: 'an orange cat laying on top of a wooden table'. How many words contain the letter 'l' in the sentence.

Ex Output:
2

Ex Input:
Sentence: 'the sits in front of a table with a decoration made of apples'. How many words contain the letter 'x' in the sentence.

Ex Output:
0