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

[EX Q]: Sentence: 'a dog on a deck ripping in to a plastic frisbee'. How many words contain the letter 'l' in the sentence.
[EX A]: 1

[EX Q]: Sentence: 'group of horses in a field with a pinto in the foreground'. How many words contain the letter 'h' in the sentence.
[EX A]: 3

[EX Q]: Sentence: 'a pizza in a box with several slices taken out of it'. How many words contain the letter 'b' in the sentence.
[EX A]:
1