TASK DEFINITION: In this task, you need to count the number of words in a sentence that contain the given letter
PROBLEM: Sentence: 'there are trains that are on the train track'. How many words contain the letter 'z' in the sentence.

SOLUTION: 0

PROBLEM: Sentence: 'a group of people standing together talking '. How many words contain the letter 'b' in the sentence.

SOLUTION: 0

PROBLEM: Sentence: 'fresh daisies in a rectangular green glass vase'. How many words contain the letter 's' in the sentence.

SOLUTION:
4