Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.

### Instruction:
Given a sentence, break it down into its syntactic components such as noun phrase, verb phrase, and noun phrase.

### Input:
John saw the big dog bark.

### Response:
Noun Phrase: John, the big dog 
Verb Phrase: saw, bark 
Adjective Phrase: big