546 \bl{\begin{tabular}{@ {}lcl}

   546 \bl{\begin{tabular}{@ {}lcl}

   547 $S$ & $\rightarrow$ &  $N\cdot P$ \\

   547 $S$ & $\rightarrow$ &  $N\cdot P$ \\

   548 $P$ & $\rightarrow$ &  $V\cdot N$ \\

   548 $P$ & $\rightarrow$ &  $V\cdot N$ \\

   549 $N$ & $\rightarrow$ &  $N\cdot N$ \\

   549 $N$ & $\rightarrow$ &  $N\cdot N$ \\

   550 $N$ & $\rightarrow$ &  $\texttt{students} \;|\; \texttt{Jeff} \;|\; \texttt{geometry} \;|\; \texttt{trains} $ \\

   550 $N$ & $\rightarrow$ &  $\texttt{students} \;|\; \texttt{Jeff} \;|\; \texttt{geometry} \;|\; \texttt{trains} $ \\

   552 \end{tabular}}

   552 \end{tabular}}

   553 \end{center}

   553 \end{center}

   554 

   554 

   555 \bl{\texttt{Jeff trains geometry students}}

   555 \bl{\texttt{Jeff trains geometry students}}

   556 

   556