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 skateboarding down a rail next to a building'. How many words start with the letter 'a' in the sentence.
answer:
3


question:
Sentence: 'a busy train yard packed with trains and tracks'. How many words start with the letter 't' in the sentence.
answer:
3


question:
Sentence: 'a road going across a river with a clock and tower on the other side in the sunset'. How many words start with the letter 'a' in the sentence.
answer:

5