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

Input: Consider Input: Sentence: 'a young man dressed as a nun skateboards down the street'. How many words contain the letter 'e' in the sentence.

Output: 4


Input: Consider Input: Sentence: 'a man in a white turban drives a motorcycle along a dirty road'. How many words contain the letter 'd' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'people wait for a train on a snowy sidewalk'. How many words contain the letter 'z' in the sentence.


Output: 0