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 man standing next to a car talking on the phone'. How many words start with the letter 't' in the sentence.

Ex Output:
3


Ex Input:
Sentence: 'a train station with a train sitting there waiting to be loaded'. How many words start with the letter 't' in the sentence.

Ex Output:
4


Ex Input:
Sentence: 'a woman riding a horse down a beach next to the ocean'. How many words start with the letter 'd' in the sentence.

Ex Output:

1