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

[Q]: Sentence: 'Two boats are docked at the bank of a river'. Count the number of nouns in this sentence.
[A]: 3


[Q]: Sentence: 'Tail end of an airplane waiting on the tarmac'. Count the number of verbs in this sentence.
[A]: 1


[Q]: Sentence: 'A picture of a sign on a street upside down'. Count the number of nouns in this sentence.
[A]:
3