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

Ex Input:
Sentence: 'A baseball player attempting to slide into a base'. Count the number of verbs in this sentence.

Ex Output:
2


Ex Input:
Sentence: 'A woman is sitting in the grass next to her red bike'. Count the number of verbs in this sentence.

Ex Output:
1


Ex Input:
Sentence: 'Several zebras and other animals grazing in a field'. Count the number of verbs in this sentence.

Ex Output:

1