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

Input: Consider Input: Sentence: 'a person is riding a bicycle on the street'. How many words contain the letter 'b' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'a group of people skiing down a mountain slope'. How many words contain the letter 'e' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'a cake made to look like an old truck'. How many words contain the letter 'h' in the sentence.


Output: 0