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

Ex Input:
Sentence: 'Two men loading a pick up truck with liquor'. Count the number of nouns in this sentence.

Ex Output:
4

Ex Input:
Sentence: 'An artistic version of a roller coaster at theme park'. Count the number of nouns in this sentence.

Ex Output:
5

Ex Input:
Sentence: 'a bunch of students stand around on the field behind some school buildings, playing Frisbee'. Count the number of verbs in this sentence.

Ex Output:
2