instruction:
In this task, you need to count the number of words in a sentence that start with the given letter. Answer with numbers and not words.
question:
Sentence: 'a man riding on top of a wave on a surfboard'. How many words start with the letter 'o' in the sentence.
answer:
3


question:
Sentence: 'some zebras standing around in a special area'. How many words start with the letter 'i' in the sentence.
answer:
1


question:
Sentence: 'there is a pizza on the counter'. How many words start with the letter 'c' in the sentence.
answer:

1