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

Input: Consider Input: Sentence: 'Three zebra are grazing on grass in an open field'. Count the number of verbs in this sentence.

Output: 1


Input: Consider Input: Sentence: 'A man and children are riding on the back of an elephant'. Count the number of nouns in this sentence.

Output: 4


Input: Consider Input: Sentence: 'a group of white bananas that are on a tree'. Count the number of nouns in this sentence.


Output: 3