user: Question: What caused the collapse of the Mausoleum at Halicarnassus?
Columns: ['Name', 'Date of construction', 'Builder', 'Date of destruction', 'Cause of destruction', 'Modern location']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Great Pyramid of Giza', '2584–2561 BC', 'Egyptians', 'Still in existence', 'Still in existence', 'Giza Necropolis , Egypt']
SQL:

assistant: SELECT "Cause of destruction" FROM "Table" WHERE "Name" = 'Mausoleum at Halicarnassus';