instruction:
In this task, you need to count the number of words in a sentence that contain the given letter
question:
Sentence: 'a woman standing in the dirt looking up at an elephant'. How many words contain the letter 'b' in the sentence.
answer:
0


question:
Sentence: 'a white longheaired dog eating a birthday cake'. How many words contain the letter 'z' in the sentence.
answer:
0


question:
Sentence: 'a man performs a trick on a skate board as people look on'. How many words contain the letter 'r' in the sentence.
answer:

3