med size country shapes have overlap?

number of errors=1
number of warnings=0
Group=chkGrpShp

select a.geonameid,b.geonameid bid from geoname_bbox a, geoname_bbox b where st_area(st_intersection(a.med_geom,b.med_geom))>0.2 and a.geonameid

geonameid	bid	
1269750	1814991