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

Ex Input:
Sentence: 'A cardboard sign is stapled onto a tree on a street'. Count the number of verbs in this sentence.

Ex Output:
1


Ex Input:
Sentence: 'A tennis player getting ready to hit the ball'. Count the number of verbs in this sentence.

Ex Output:
2


Ex Input:
Sentence: 'A snow skier slows down while skiing on a slope'. Count the number of nouns in this sentence.

Ex Output:

3