What is the cat on?
The cat is on the luggage.
    src        edge_attr  dst
0     0  to the right of    7
1     0  to the right of    3
2     0               on    4
3     2  to the right of    9
4     2               on    4
5     3   to the left of    0
6     3  to the right of    7
7     7   to the left of    3
8     7   to the left of    0
9     8         lying on    2
10    8        on top of    2
11    8               on    2
12    9   to the left of    2