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

[EX Q]: Sentence: 'people standing in a river surrounding an elephant some are touching it'. How many words contain the letter 'd' in the sentence.
[EX A]: 2

[EX Q]: Sentence: 'a man holding an owl in a lush green field'. How many words contain the letter 'y' in the sentence.
[EX A]: 0

[EX Q]: Sentence: 'a small kid standing on a dirt road'. How many words contain the letter 'z' in the sentence.
[EX A]:
0