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

Ex Input:
Sentence: 'Kites can be a great mode of transportation over the ice'. Count the number of verbs in this sentence.

Ex Output:
1

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 skateboarder is performing a trick inside a parking garage'. Count the number of nouns in this sentence.

Ex Output:
4