Question: What is the opening date of the Musical at the Adelphi Theatre?
SQL: SELECT "Opening date" FROM "2-1154952-1" WHERE "Classification" = 'Musical' AND "Theatre" = 'Adelphi Theatre';

Question: What opening date has a capacity of 100?
SQL: SELECT "Opening date" FROM "2-1154952-1" WHERE "Capacity" = 100.0;