What color is the shelf that the bike is on?
The shelf is brown.
   src        edge_attr  dst
0    0  to the right of    9
1    1  to the right of    2
2    2   to the left of    1
3    4               on    5
4    7  to the right of    9
5    7          next to    9
6    9   to the left of    7
7    9               on    5
8    9             near    7
9    9   to the left of    0