query([]) :-
geost(2,
          [[oid-1,sid-1,x-[[v-0],[v-9]]],
           [oid-2,sid-2,x-[[v-1],[v-19]]],
           [oid-3,sid-3,x-[[v-29],[v-4]]],
           [oid-4,sid-4,x-[[v-14],[v-0]]],
           [oid-5,sid-5,x-[[v-13],[v-27]]],
           [oid-6,sid-6,x-[[v-13],[v-21]]],
           [oid-7,sid-7,x-[[v-22],[v-4]]],
           [oid-8,sid-8,x-[[v-14],[v-4]]],
           [oid-9,sid-9,x-[[v-0],[v-0]]],
           [oid-10,sid-10,x-[[v-1],[v-9]]],
           [oid-11,sid-11,x-[[v-1],[v-21]]]],
          [[sid-1,t-[[v-0],[v-0]],l-[[v-1],[v-22]]],
           [sid-2,t-[[v-0],[v-0]],l-[[v-21],[v-2]]],
           [sid-3,t-[[v-0],[v-0]],l-[[v-3],[v-20]]],
           [sid-4,t-[[v-0],[v-0]],l-[[v-18],[v-4]]],
           [sid-5,t-[[v-0],[v-0]],l-[[v-19],[v-5]]],
           [sid-6,t-[[v-0],[v-0]],l-[[v-16],[v-6]]],
           [sid-7,t-[[v-0],[v-0]],l-[[v-7],[v-17]]],
           [sid-8,t-[[v-0],[v-0]],l-[[v-8],[v-15]]],
           [sid-9,t-[[v-0],[v-0]],l-[[v-14],[v-9]]],
           [sid-10,t-[[v-0],[v-0]],l-[[v-13],[v-10]]],
           [sid-11,t-[[v-0],[v-0]],l-[[v-12],[v-11]]]]).