001    /*
002     * Created on Sep 14, 2003 
003     *
004     */
005    package aima.logic.fol.parsing.ast;
006    
007    
008    /**
009     * @author Ravi Mohan
010     * @author Ciaran O'Reilly
011     */
012    public interface Sentence extends FOLNode {
013            Sentence copy();
014    }