What kind of furniture is the elephant on?
The elephant is on the table.
    src        edge_attr  dst
0     1  to the right of    5
1     1  to the right of    7
2     2  to the right of    7
3     2  to the right of    5
4     3               on    4
5     3  to the right of    5
6     3  to the right of    7
7     3             near    5
8     5       sitting on    4
9     5               on    4
10    5   to the left of    1
11    5          next to    3
12    5   to the left of    2
13    5   to the left of    3
14    6               on    5
15    7   to the left of    3
16    7  on the front of    5
17    7   to the left of    1
18    7   to the left of    2
19    7               on    5