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

Example Input: Sentence: 'a stir fry consisting of rice broccoli and other vegetables'. How many words contain the letter 'e' in the sentence.
Example Output: 3

Example Input: Sentence: 'a little girl sitting on the floor reading a book'. How many words contain the letter 'n' in the sentence.
Example Output: 3

Example 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.
Example Output:
0