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 terrier in a black and light brown far next to each other'. How many words start with the letter 'b' in the sentence.
answer:
2


question:
Sentence: 'two men are riding horses on a beach'. How many words start with the letter 'r' in the sentence.
answer:
1


question:
Sentence: 'one giraffe from a group of two reaches through a gate toward a group of people standing outside the gate'. How many words start with the letter 'a' in the sentence.
answer:

3