<Tr> <Th> Location </Th> <Th> Modern Country </Th> <Th> Local name </Th> <Th> Metric equivalent (mm) </Th> <Th> Comments </Th> </Tr> <Tr> <Td> Vienna </Td> <Td> Austria </Td> <Td> Wiener Fuß </Td> <Td> 316.102 </Td> <Td> </Td> </Tr> <Tr> <Td> Tyrol </Td> <Td> Austria </Td> <Td> Fuß </Td> <Td> 334.12 </Td> <Td> </Td> </Tr> <Tr> <Td> Ieper / Ypres </Td> <Td> Belgium </Td> <Td> voet </Td> <Td> 273.8 </Td> <Td> </Td> </Tr>

Where does the term 6 feet under come from