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

Ex Input:
Sentence: 'A group of men sitting next to each other on a bench'. Count the number of verbs in this sentence.

Ex Output:
1


Ex Input:
Sentence: 'A silver and yellow engine is followed by several train cars'. Count the number of verbs in this sentence.

Ex Output:
1


Ex Input:
Sentence: 'A skateboarder doing a trick at a skate park'. Count the number of nouns in this sentence.

Ex Output:

4