rank nation gold silver bronze total
rank
nation
gold
silver
bronze
total
number
number
number
number
number
number text number number number number
1 japan 5 2 0 7
which country got at least one of each medal ?
WDT NN VBD IN JJS CD IN DT NN .
China
select c2 from w where c3_number >= 1 and c4_number >= 1 and c5_number >= 1