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