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: 'group of zebras and gazelles grazing on the grass'. How many words start with the letter 'g' in the sentence.
answer:
4


question:
Sentence: 'a tennis player walking off the court'. How many words start with the letter 't' in the sentence.
answer:
2


question:
Sentence: 'several people are playing frisbee in a park'. How many words start with the letter 'a' in the sentence.
answer:

2