Question: What is the location of the match where the method was Submission (armbar) and Mayra Conde was the opponent?
SQL: SELECT "Location" FROM "2-12870166-2" WHERE "Method" = 'Submission (armbar)' AND "Opponent" = 'Mayra Conde';

Question: Who is the opponent of the match with a method of Submission (armbar) and a 9-3-1 record?
SQL: SELECT "Opponent" FROM "2-12870166-2" WHERE "Method" = 'Submission (armbar)' AND "Record" = '9-3-1';