You can "think outside of" it, or a group of opera patrons can be held in it
[DOC] [TLE] Jeopary Questions page 1071 - GEOMETRY - TriviaBistro.com [PAR] NOTHING SPECIFIC: You can "think outside of" it, or a group of opera patrons 
can be held in it  ANCIENT HISTORY: 2006: In February, he accidentally shot... [DOC] [TLE] Best Places to Take in an Italian Opera - Answers [PAR] It is the oldest opera house in all of Europe and a favorite among patrons.