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

Ex Input:
Sentence: 'A young teenager in glasses smiles while brushing her teeth'. Count the number of nouns in this sentence.

Ex Output:
4

Ex Input:
Sentence: 'You can still get tacos and burritos late at night from this truck'. Count the number of nouns in this sentence.

Ex Output:
4

Ex Input:
Sentence: 'A road sign sitting on the side of a road next to a speed limit sign'. Count the number of verbs in this sentence.

Ex Output:
1