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 group of young people riding snow boards down a snow covered hillside'. How many words start with the letter 'a' in the sentence.
2

Sentence: 'a skateboarder doing a trick at a skate park'. How many words start with the letter 'a' in the sentence.
4

Sentence: 'the large electronic toilet looks like it is modern'. How many words start with the letter 'l' in the sentence.

3