// representation of a clause in the propositional formula public class clause { node n = null; // node representation of clause String value = null; // status of clause String originalStr = null; // original, non-simplified clause int unknowns = 0; // used to determine unit-open vs non-unit-open public clause(node n, String value, String originalStr) { this.n = n; this.value = value; this.originalStr = originalStr; } }