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.

Sentence: 'a lady has just about finished her plate with a knife'. How many words start with the letter 'a' in the sentence.
3

Sentence: 'man playing tennis on dirt court outside in the sun'. How many words start with the letter 'd' in the sentence.
1

Sentence: 'there is a man sitting most of the picture is black'. How many words start with the letter 'i' in the sentence.

2