What is the color of the pillows to the left of the other pillow?
The pillows are red.
   src        edge_attr  dst
0    0  to the right of    1
1    1   to the left of    0
2    3   to the left of    5
3    5  to the right of    3
4    7  to the right of    8
5    8   to the left of    7