In this task, you need to count the number of nouns/verbs in the given sentence.

Input: Consider Input: Sentence: 'a man is flying through the air on a snowboard'. Count the number of nouns in this sentence.

Output: 3


Input: Consider Input: Sentence: 'We are looking down at the skis of a skier riding a ski lift'. Count the number of verbs in this sentence.

Output: 2


Input: Consider Input: Sentence: 'Several motorcycles driving in the street of a city'. Count the number of nouns in this sentence.


Output: 3