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 bed sitting next to a window with a wooden headboard'. How many words start with the letter 'a' in the sentence.
[EX A]: 3

[EX Q]: Sentence: 'a street sign view in a very blurry picture'. How many words start with the letter 's' in the sentence.
[EX A]: 2

[EX Q]: Sentence: 'a piece of childish artwork on a refrigerator beneath blue balloons'. How many words start with the letter 'r' in the sentence.
[EX A]:
1