instruction:
In this task, you need to count the number of words in a sentence that contain the given letter
question:
Sentence: 'a man with a skateboard up in air at a skateboard park'. How many words contain the letter 's' in the sentence.
answer:
2

question:
Sentence: 'a person standing in the kitchen with an object in hand'. How many words contain the letter 't' in the sentence.
answer:
5

question:
Sentence: 'several elephants walking in a lake with people riding on their backs'. How many words contain the letter 'r' in the sentence.
answer:
3