instruction:
In this task, you need to count the number of words in a sentence that contain the given letter
question:
Sentence: 'a smiling man holds out a card with color swatches'. How many words contain the letter 'i' in the sentence.
answer:
2

question:
Sentence: 'a bus station full of people walking on the side walk'. How many words contain the letter 'q' in the sentence.
answer:
0

question:
Sentence: 'a british airways airplane begins its takeoff'. How many words contain the letter 's' in the sentence.
answer:
4