TASK DEFINITION: In this task, you need to count the number of words in a sentence that contain the given letter
PROBLEM: Sentence: 'a grown elephant with two baby elephants standing in tall grasses'. How many words contain the letter 'w' in the sentence.

SOLUTION: 3

PROBLEM: Sentence: 'a man sanding next to a cow in a pen'. How many words contain the letter 'h' in the sentence.

SOLUTION: 0

PROBLEM: Sentence: 'people standing in a river surrounding an elephant some are touching it'. How many words contain the letter 'd' in the sentence.

SOLUTION:
2