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

Ex Input:
Sentence: 'a bearded man sits on a couch with an electronic device in his hand'. How many words contain the letter 'e' in the sentence.

Ex Output:
3

Ex Input:
Sentence: 'multiple birds on the ground in a parking lot'. How many words contain the letter 'm' in the sentence.

Ex Output:
1

Ex Input:
Sentence: 'an entrance way table has a clock on it and a wall candelabra above it'. How many words contain the letter 'm' in the sentence.

Ex Output:
0