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

Ex Input:
Sentence: 'A person on a skateboard reads while riding'. Count the number of verbs in this sentence.

Ex Output:
2


Ex Input:
Sentence: 'Two young girls sitting on top of a bench'. Count the number of nouns in this sentence.

Ex Output:
3


Ex Input:
Sentence: 'An old, dirty toilet in a small bathroom that is falling down'. Count the number of nouns in this sentence.

Ex Output:

2