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

Input: Consider Input: Sentence: 'a airplane is seen at the airport with other airplanes'. How many words contain the letter 'z' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'an image of a person holding a blunt object is rendered in red and blue tones'. How many words contain the letter 'x' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'a teddy bear laying on a pillow on a bed'. How many words contain the letter 'w' in the sentence.


Output: 1