What animal is on the cart?
The bear is on the cart.
    src        edge_attr  dst
0     1  to the right of   11
1     1  to the right of    2
2     1               on   10
3     2   to the left of   10
4     2   to the left of    1
5     3  to the right of   12
6     4   to the left of   11
7     4   to the left of    6
8     6  to the right of    4
9     9  to the right of   12
10   10  to the right of   11
11   10             near   11
12   10  to the right of    2
13   10               on    7
14   10      in front of   11
15   11               on    8
16   11           behind   10
17   11             near   10
18   11   to the left of   10
19   11  to the right of    4
20   11   to the left of    1
21   12   to the left of    9
22   12   to the left of    3