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

Input: Consider Input: Sentence: 'A couple of boats traveling down a river'. Count the number of nouns in this sentence.

Output: 3


Input: Consider Input: Sentence: 'A family walking towards a very small airplane'. Count the number of verbs in this sentence.

Output: 1


Input: Consider Input: Sentence: 'Steeple with clock behind green trees and bushes'. Count the number of nouns in this sentence.


Output: 3