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

Input: Consider Input: Sentence: 'a large airplane flying over a dry grass hillside'. How many words contain the letter 'e' in the sentence.

Output: 4


Input: Consider Input: Sentence: 'a woman with a shopping bag talking on a cell phone'. How many words contain the letter 'e' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'a man walking into the ocean while holding a surfboard'. How many words contain the letter 'u' in the sentence.


Output: 1