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: 'some signs and the roof of a train station'. How many words start with the letter 'a' in the sentence.
answer:
2


question:
Sentence: 'a heard of sheep are grazing on the land'. How many words start with the letter 't' in the sentence.
answer:
1


question:
Sentence: 'an elephant looking straight ahead while standing outside'. How many words start with the letter 's' in the sentence.
answer:

2