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

Input: Consider Input: Sentence: 'a big sign that is lit up near some buildings'. How many words contain the letter 'r' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'a large truck driving on a crowded street'. How many words contain the letter 'i' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'a wide sidewalk has a tiered tower with a clock toward the top'. How many words contain the letter 'w' in the sentence.


Output: 5