Which kind of appliance is not old?
The appliance is a pizza oven.
   src        edge_attr  dst
0    2  to the right of    9
1    2  to the right of    3
2    3   to the left of    2
3    4  to the right of    9
4    5  to the right of    9
5    9   to the left of    4
6    9   to the left of    2
7    9   to the left of    5