// /home/andreas/workspace/ANTLRTester/antlr-files/NQuad.g:83:1: nQuadDoc returns [List<Quad> quads] : ( line )* EOF ;

    public final List<Quad> nQuadDoc() throws RecognitionException {

        List<Quad> quads = null;

        try {

            // /home/andreas/workspace/ANTLRTester/antlr-files/NQuad.g:84:3: ( ( line )* EOF )

            // /home/andreas/workspace/ANTLRTester/antlr-files/NQuad.g:84:5: ( line )* EOF

 

    // $ANTLR start "line"

    // /home/andreas/workspace/ANTLRTester/antlr-files/NQuad.g:94:1: line returns [Quad value] : ( comment | quad );

    public final Quad line() throws RecognitionException {

        try {

            // /home/andreas/workspace/ANTLRTester/antlr-files/NQuad.g:95:3: ( comment | quad )

            int alt2=2;

    // $ANTLR start "quad"

    // /home/andreas/workspace/ANTLRTester/antlr-files/NQuad.g:99:1: quad returns [Quad value] : subject predicate object ( graph )? DOT ;

    public final Quad quad() throws RecognitionException {

        Node graph3 = null;

        Vector<String> subject4 = null;

        Node predicate5 = null;

        Vector<String> object6 = null;

        try {

            // /home/andreas/workspace/ANTLRTester/antlr-files/NQuad.g:100:3: ( subject predicate object ( graph )? DOT )

            // /home/andreas/workspace/ANTLRTester/antlr-files/NQuad.g:100:5: subject predicate object ( graph )? DOT

            {

             String quadGraph = graph;

            pushFollow(FOLLOW_subject_in_quad145);

            subject4=subject();

            state._fsp--;

            pushFollow(FOLLOW_predicate_in_quad147);

            predicate5=predicate();

            state._fsp--;

            pushFollow(FOLLOW_object_in_quad149);

            object6=object();

            state._fsp--;

            // /home/andreas/workspace/ANTLRTester/antlr-files/NQuad.g:101:30: ( graph )?

            int alt3=2;

            int LA3_0 = input.LA(1);

            if ( (LA3_0==URI) ) {

                alt3=1;

            }

            switch (alt3) {

                case 1 :

                    // /home/andreas/workspace/ANTLRTester/antlr-files/NQuad.g:101:31: graph

                    {

                    pushFollow(FOLLOW_graph_in_quad152);

                    graph3=graph();

                    state._fsp--;

                     quadGraph = graph3.value();

                    }

                    break;

            }

            match(input,DOT,FOLLOW_DOT_in_quad158);

            }

        }