<Table> 1972 FA Cup Final <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th> Event </Th> <Td> 1971--72 FA Cup </Td> </Tr> <Tr> <Td_colspan="2"> <Table> <Tr> <Th> Leeds United </Th> <Th> Arsenal </Th> </Tr> <Tr> <Th> </Th> <Th> </Th> </Tr> <Tr> <Th> </Th> <Th> 0 </Th> </Tr> </Table> </Td> </Tr> <Tr> <Th> Date </Th> <Td> 6 May 1972 </Td> </Tr> <Tr> <Th> Venue </Th> <Td> Wembley Stadium, London </Td> </Tr> <Tr> <Th> Referee </Th> <Td> David Smith (Stonehouse) </Td> </Tr> <Tr> <Th> Attendance </Th> <Td> 100,000 </Td> </Tr> <Tr> <Td_colspan="2"> ← 1971 1973 → </Td> </Tr> </Table> <Tr> <Th> Event </Th> <Td> 1971--72 FA Cup </Td> </Tr>

When did leeds united win the fa cup