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

Input: Consider Input: Sentence: 'a fire hydrant on the side of the road near a building'. How many words contain the letter 'a' in the sentence.

Output: 5


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

Output: 4


Input: Consider Input: Sentence: 'a person sleeps on a bed in a messy room'. How many words contain the letter 'v' in the sentence.


Output: 0