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 group of people sitting at a long table in  a wine cellar'. How many words start with the letter 'a' in the sentence.
[A]: 4


[Q]: Sentence: 'this kitchen has wooden cabinets and silver and black appliances'. How many words start with the letter 'a' in the sentence.
[A]: 3


[Q]: Sentence: 'people riding on a small kid sized steam train'. How many words start with the letter 's' in the sentence.
[A]:
3