On which side is the Styrofoam cup?
The cup is on the left of the image.
   src        edge_attr  dst
0    0   to the left of    6
1    0   to the left of    1
2    0   to the left of    7
3    1  to the right of    0
4    4   to the left of    7
5    6  to the right of    0
6    7               on    1
7    7  to the right of    4
8    7  to the right of    0