A Natural Language Interface Concordant with a Knowledge Base

Table 7

The effect of the constraints on the number of generated schema subgraphs.

Constraint	Number of predicates allowed
	1	2	3
No constraint	182	11,627	232,367
Constraint 1 (inverse relationship)	151	8,288	136,443
Constraint 2 (functional)	182	11,623	232,293
Constraint 3 (inverse functional)	182	11,626	232,313
All constraints applied	151	8,283	136,391