<Table> The Floating Opera <Tr> <Td_colspan="2"> First edition </Td> </Tr> <Tr> <Th> Author </Th> <Td> John Barth </Td> </Tr> <Tr> <Th> Country </Th> <Td> United States </Td> </Tr> <Tr> <Th> Language </Th> <Td> English </Td> </Tr> <Tr> <Th> Publication date </Th> <Td> <Ul> <Li> 1956 </Li> <Li> 1967 (revised) </Li> </Ul> </Td> </Tr> </Table> <Tr> <Td_colspan="2"> First edition </Td> </Tr> <Tr> <Th> Author </Th> <Td> John Barth </Td> </Tr> <Tr> <Th> Country </Th> <Td> United States </Td> </Tr>

Examine the dual structure of the floating opera