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 close up of a dog standing on a rug'. How many words start with the letter 'o' in the sentence.

A: 2
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Q: Sentence: 'car pass threw a green light in the day light'. How many words start with the letter 'd' in the sentence.

A: 1
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Q: Sentence: 'a male tennis player with a hat and sunglasses standing on a hard surface court with a racket in his hand'. How many words start with the letter 'r' in the sentence.

A:
1
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