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 woman brushing her hair with a brush and seated in front of a mirror'. Count the number of nouns in this sentence.

Output: 5


Input: Consider Input: Sentence: 'several double decker buses on a crowded urban street'. Count the number of verbs in this sentence.


Output: 0