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: 'an airplane as it is taking off and is ascending into space'. How many words start with the letter 'a' in the sentence.
[A]: 5


[Q]: Sentence: 'a man wearing a striped tie and a jacket'. How many words start with the letter 'j' in the sentence.
[A]: 1


[Q]: Sentence: 'a man flies a kite on the beach'. How many words start with the letter 'b' in the sentence.
[A]:
1