What is on the table?
The sushi is on the table.
    src        edge_attr  dst
0     1               on    0
1     1             near    6
2     1   to the left of    6
3     1             near    3
4     1               on    5
5     3               on    0
6     3             near    1
7     3             near    6
8     3               on    5
9     4               on    0
10    4               on    5
11    6               on    0
12    6  to the right of    1
13    6             near    3
14    6               on    5
15    6             near    1