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

Input: Consider Input: Sentence: 'an old airplane sitting on top of a field'. How many words contain the letter 'h' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'a laptop a table a mouse some dirt and water'. How many words contain the letter 'u' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'a pair of doughnuts are served on a plate'. How many words contain the letter 'w' in the sentence.


Output: 0