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

Input: Consider Input: Sentence: 'an acoustic guitar is shown laying on a bed'. How many words contain the letter 'l' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'black and white photo of old man riding a motorcycle'. How many words contain the letter 'n' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'a cat curled up sleeping on a sportscar'. How many words contain the letter 'q' in the sentence.


Output: 0