Table Summary: A table with $3$ columns. Column $1$ lists the activity. Column $2$ lists the corresponding immediate predecessor. Column $3$ lists the time in weeks.

Activity Immediate Predecessor Time $($weeks$)$

A $6$

B A $3$

C A $7$

D C $2$

E B$,$ D $4$

F D $3$

G E$,$ F $7$

Draw the network.