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

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


[Q]: Sentence: 'two giraffes with their heads in the tree'. How many words contain the letter 'o' in the sentence.
[A]: 1


[Q]: Sentence: 'people surfing on a white water river'. How many words contain the letter 'd' in the sentence.
[A]:
0