What color is the bear that is sitting on the shelf?
The bear is orange.
    src        edge_attr  dst
0     0       sitting on    1
1     0   to the left of    4
2     1   to the left of    3
3     1   to the left of    2
4     2  to the right of    1
5     2   to the left of    7
6     2  to the right of   10
7     3   to the left of    8
8     3  to the right of    1
9     3   to the left of    7
10    4  to the right of    0
11    7  to the right of    2
12    7  to the right of    3
13    8  to the right of    3
14    9  to the right of   10
15   10   to the left of    2
16   10   to the left of    9