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 picture of a zebra that is walking in the grass'. How many words start with the letter 'z' in the sentence.
1

Sentence: 'person surfing in the sea on the surfboard'. How many words start with the letter 's' in the sentence.
3

Sentence: 'a teddy bear with a hat in a store'. How many words start with the letter 'i' in the sentence.

1