What is the white animal painted on?
The zebra is painted on the wall.
    src        edge_attr  dst
0     0           behind    6
1     0   to the left of    3
2     1       painted on    6
3     3  to the right of    0
4     4               of    1
5     4  to the right of    9
6     4  to the right of    8
7     4  to the right of    7
8     7   to the left of    4
9     8   to the left of    4
10    9           riding    5
11    9   to the left of    4