What's the coffee mug on?
The coffee mug is on the table.
    src        edge_attr  dst
0     0               on    3
1     0   to the left of    2
2     0   to the left of    3
3     1               on    3
4     1   to the left of    3
5     2  to the right of    0
6     2               by    4
7     2               on    3
8     3  to the right of    1
9     3  to the right of    0
10    4               on    3
11    4  to the right of    5
12    4               by    2
13    5   to the left of    4
14    5               on    1