TASK DEFINITION: In this task, you need to count the number of words in a sentence that contain the given letter
PROBLEM: Sentence: 'a small terrier stands in the open suitcase ready to go'. How many words contain the letter 'l' in the sentence.

SOLUTION: 1

PROBLEM: Sentence: 'a cat in a tie sits on the couch'. How many words contain the letter 't' in the sentence.

SOLUTION: 4

PROBLEM: Sentence: 'an artistic photo of a dirt bike in front of trees'. How many words contain the letter 'f' in the sentence.

SOLUTION:
3