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

Ex Input:
Sentence: 'A variety of shots of a man doing skateboarding tricks'. 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 picture of instructions for assembly in an owners manual'. Count the number of verbs in this sentence.

Ex Output:
0