TASK DEFINITION: In this task, you need to count the number of words in a sentence that contain the given letter
PROBLEM: Sentence: 'a soldier holds something for a young bear'. How many words contain the letter 'a' in the sentence.

SOLUTION: 3

PROBLEM: Sentence: 'three zebras are shown in a black and white photo'. How many words contain the letter 'y' in the sentence.

SOLUTION: 0

PROBLEM: Sentence: 'a green bird sitting on top of a broken tree branch'. How many words contain the letter 'a' in the sentence.

SOLUTION:
3