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

Ex Input:
Sentence: 'Pedestrians stand at a crosswalk waiting for the light to change'. Count the number of nouns in this sentence.

Ex Output:
3


Ex Input:
Sentence: 'A group of people flying kites in a field'. Count the number of verbs in this sentence.

Ex Output:
1


Ex Input:
Sentence: 'One person tossing a frisbee to another person in front of some trees'. Count the number of verbs in this sentence.

Ex Output:

1