<Tr> <Td_colspan="15"> </Td> <Td> </Td> <Td> </Td> <Td> Romania </Td> <Td> </Td> </Tr> <Tr> <Td_colspan="6"> </Td> <Td_colspan="5"> Maribor, Slovenia (indoor hard) </Td> <Td_colspan="4"> </Td> <Td> </Td> <Td> </Td> <Td> Poland </Td> <Td> </Td> </Tr> <Tr> <Td_colspan="5"> </Td> <Td> </Td> <Td> </Td> <Td> Slovenia </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Td_colspan="1"> </Td> <Td_colspan="4"> Portorož, Slovenia (clay) </Td> <Td> </Td> <Td> </Td> <Td> Poland </Td> <Td> </Td> <Td> </Td> <Td_colspan="1"> </Td> <Td_colspan="5"> Sopot, Poland (indoor hard) </Td> </Tr>

Where is the davis cup played in 2018