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.

[Q]: Sentence: 'a zebra is running toward a shady area under the trees'. How many words start with the letter 'a' in the sentence.
[A]: 3


[Q]: Sentence: 'a person standing on a green field next to a river flying a kite'. How many words start with the letter 'a' in the sentence.
[A]: 4


[Q]: Sentence: 'a number of motorcycles are on display at a museum'. How many words start with the letter 'o' in the sentence.
[A]:
2