In this task, you need to count the number of words in a sentence that contain the given letter
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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 sidewalk with a toilet laying on side with people in background'. How many words contain the letter 'o' in the sentence.

Answer: 4


Question: Sentence: 'a man riding on the back of a motorcycle'. How many words contain the letter 's' in the sentence.

Answer:
0