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 holding a white frisbee while standing on top of a  beach'. How many words start with the letter 'o' in the sentence.
answer:
2


question:
Sentence: 'a woman standing next to another woman in front of a tv'. How many words start with the letter 'a' in the sentence.
answer:
3


question:
Sentence: 'this is an aerial view of a tennis player about to serve'. How many words start with the letter 't' in the sentence.
answer:

3