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.

[EX Q]: Sentence: 'a group of four people are riding a ski lift as they ride over the snowy mountain'. How many words start with the letter 'a' in the sentence.
[EX A]: 4

[EX Q]: Sentence: 'a train moves across a train crossing in a city'. How many words start with the letter 'c' in the sentence.
[EX A]: 2

[EX Q]: Sentence: 'an overhead view of many small food dishes on a table'. How many words start with the letter 'o' in the sentence.
[EX A]:
3