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 bath tub sink and window located in a bathroom'. How many words start with the letter 'a' in the sentence.
answer:
3


question:
Sentence: 'a giraffe is standing behind a stone wall'. How many words start with the letter 'a' in the sentence.
answer:
2


question:
Sentence: 'a sandwich vegetables and a beer sitting on a table'. How many words start with the letter 'a' in the sentence.
answer:

4