What's the child sitting on?
The kid is sitting on the bench.
    src        edge_attr  dst
0     0      in front of   10
1     6  to the right of   12
2     8          holding    9
3     8       sitting on   10
4     8          holding    4
5     8          wearing   11
6     8          wearing    7
7     8  sitting next to    0
8    10             near   13
9    10          next to   13
10   10           behind    0
11   12   to the left of    6
12   13             near   10