ldl++(24)> query rgc(I,X,Y,C)
query rgc(I,X,Y,C)

Querying : rgc(I,X,Y,C) ... 
	(0, a, d, 5)
	(0, b, d, 1)
	(0, c, d, 2)
	(1, a, d, 10)
	(1, b, d, 6)
	(2, a, d, 12)

	The number of records is 6.
ldl++(25)> query final_count(X,Y,C)
query final_count(X,Y,C)

Querying : final_count(X,Y,C) ... 
	(c, d, 2)
	(b, d, 7)
	(a, d, 27)

	The number of records is 3.
ldl++(26)>