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: 'some very pretty giraffes standing by a big fence'. How many words start with the letter 'f' in the sentence.
1

Sentence: 'a little white airplane that is parked on some concrete'. How many words start with the letter 'p' in the sentence.
1

Sentence: 'a man in a suit standing next to some railroad tracks'. How many words start with the letter 's' in the sentence.

3