user: Question: Who was played against when there was a Loss and in the GI PO round?
Columns: ['Edition', 'Round', 'Date', 'Against', 'Surface', 'Opponent', 'W/L', 'Result']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['2008 Davis Cup Europe/Africa Group II', 'QF', '18–20 July 2008', 'Cyprus', 'Clay', 'Eleftherios Christou', 'Win', '6–3, 6–3']
SQL:

assistant: SELECT "Against" FROM "Table" WHERE "W/L" = 'Loss' AND "Round" = 'GI PO';