Question: Which role had a closing broadway cast of Adam Grupper?
SQL: SELECT "Role" FROM "2-18169845-1" WHERE "Closing Broadway cast" = 'Adam Grupper';

Question: What was the original US Tour cast when the original broadway was Kevin Chamberlin?
SQL: SELECT "Original US Tour cast" FROM "2-18169845-1" WHERE "Original Broadway cast" = 'Kevin Chamberlin';

Question: What was the original nonequity tour when the original broadway was Kevin Chamberlin?
SQL: SELECT "Original NonEquity Tour cast" FROM "2-18169845-1" WHERE "Original Broadway cast" = 'Kevin Chamberlin';

Question: What was the role when the original broadway was Adam Riegler?
SQL: SELECT "Role" FROM "2-18169845-1" WHERE "Original Broadway cast" = 'Adam Riegler';