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.
--------
Question: Sentence: 'the zebra is walking through the tall brown grass'. How many words start with the letter 't' in the sentence.

Answer: 4


Question: Sentence: 'a black and white cat sits in a bathroom sink'. How many words start with the letter 'a' in the sentence.

Answer: 3


Question: Sentence: 'a siamese cat sleeping next to a brown teddy bear'. How many words start with the letter 't' in the sentence.

Answer:
2