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

Input: Consider Input: Sentence: 'a cat is laying in a piece of luggage'. How many words contain the letter 'p' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'a man walking in front of a train station'. How many words contain the letter 'o' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'a line of hot dogs sit on a tray'. How many words contain the letter 'f' in the sentence.


Output: 1