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

Ex Input:
Sentence: 'a man with a hat on sitting in a car with the door open and a laptop on his lap'. How many words contain the letter 'e' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'a living room with couches chairs and tables'. How many words contain the letter 'a' in the sentence.

Ex Output:
4


Ex Input:
Sentence: 'a man with a kite holds his hands in the air'. How many words contain the letter 'o' in the sentence.

Ex Output:

1