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.

Ex Input:
Sentence: 'the woman is standing in the rain with her umbrella'. How many words start with the letter 't' in the sentence.

Ex Output:
2

Ex Input:
Sentence: 'a person with glasses on her head with a french fry in her mouth'. How many words start with the letter 'h' in the sentence.

Ex Output:
3

Ex Input:
Sentence: 'a picture of a wooden container with crosses on it'. How many words start with the letter 'o' in the sentence.

Ex Output:
2