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 bus is parked on the side of a road in front of a building'. How many words start with the letter 'a' in the sentence.
answer:
3


question:
Sentence: 'three hot dogs are stuffed in buns are ready to serve'. How many words start with the letter 'd' in the sentence.
answer:
1


question:
Sentence: 'a woman standing in front of a store window holding a hotdog in each hand'. How many words start with the letter 'a' in the sentence.
answer:

3