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

Input: Consider Input: Sentence: 'a man buttering toast in his kitchen on the counter'. How many words contain the letter 'c' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'a woman surfer is on an ocean wave'. How many words contain the letter 's' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'a man who is wearing shorts is swinging a stick at a tennis ball'. How many words contain the letter 'l' in the sentence.


Output: 1