instruction:
In this task, you need to count the number of words in a sentence that contain the given letter
question:
Sentence: 'a black sign that is standing in the grass'. How many words contain the letter 'f' in the sentence.
answer:
0


question:
Sentence: 'a white biplane on grassy area next to buildings'. How many words contain the letter 'g' in the sentence.
answer:
2


question:
Sentence: 'a bed with a laptop a backpack a book a mouse and red case and other items'. How many words contain the letter 'o' in the sentence.
answer:

4


