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: 'a skateboarder performing tricks under the lights at night'. How many words start with the letter 'u' in the sentence.

Ex Output:
1


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: 'black and white image of a horse drawn carriage on a city road'. How many words start with the letter 'o' in the sentence.

Ex Output:

2