What is the coffee machine on?
The coffee machine is on the desk.
    src        edge_attr  dst
0     0             near    7
1     0             near    6
2     0             near    2
3     0             near    1
4     0               on    1
5     0             near    8
6     0   to the left of    2
7     0        on top of    1
8     1             near    2
9     1             near    0
10    1   to the left of    6
11    2             near    1
12    2   to the left of    7
13    2               on    1
14    2             near    0
15    2  to the right of    5
16    2  to the right of    0
17    3   to the left of    7
18    4   to the left of    6
19    5   to the left of    2
20    5   to the left of    6
21    6             near    0
22    6  to the right of    4
23    6  to the right of    1
24    6  to the right of    5
25    7               on    1
26    7  to the right of    3
27    7  to the right of    2
28    7             near    0
29    8               on    3
30    8             near    0