Is there a pig behind the white dog?
Yes, there are pigs behind the dog.
    src        edge_attr  dst
0     0           behind   13
1     1               of   13
2     4           behind    8
3     5               of   13
4     7   to the left of   13
5     8      in front of   13
6     8      in front of    4
7     9               of   13
8    10               of   12
9    11               in    8
10   13               in    8
11   13  to the right of    7
12   13      in front of    0