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

Input: Consider Input: Sentence: 'A group of people walking towards an airplane'. Count the number of nouns in this sentence.

Output: 3


Input: Consider Input: Sentence: 'Two cats laying on a hard wood floor next to empty shoes'. Count the number of verbs in this sentence.

Output: 1


Input: Consider Input: Sentence: 'Buses are along the edge of a road next to trees'. Count the number of nouns in this sentence.


Output: 4