001    /*
002     * Created on Sep 15, 2003 by Ravi Mohan
003     *  
004     */
005    package aima.logic.propositional.parsing.ast;
006    
007    import aima.logic.common.ParseTreeNode;
008    import aima.logic.propositional.parsing.PLVisitor;
009    
010    /**
011     * @author Ravi Mohan
012     * 
013     */
014    
015    public abstract class Sentence implements ParseTreeNode {
016    
017            public abstract Object accept(PLVisitor plv, Object arg);
018    
019    }