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

Input: Consider Input: Sentence: 'five kids playing with frisbees on a sunny day'. How many words contain the letter 'p' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'a little girl sitting on the floor reading a book'. How many words contain the letter 'n' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'a clock set in a wall with many windows'. How many words contain the letter 'l' in the sentence.


Output: 2