أَيْنَ النُّسَخُ؟ فِي الْخِزَانَةِ الْجَدِيدَةِ.
Where are the copies? In the new cabinet.
The answer leaves the repeated subject unspoken: the full assertion would be “al-nusakhu fī al-khizānati al-jadīdati.” The question provides a clear cue, allowing the short locative phrase to convey a complete response.
Without that question, or if several objects were under discussion, the same fragment might be ambiguous. Concision through omission is successful only when the intended meaning remains recoverable.