What is common to the trash can and the lamp post?
The material, both the trash can and the lamp post are metallic.
    src        edge_attr  dst
0     0  to the right of   13
1     0   to the left of    5
2     0   to the left of    6
3     0  to the right of    3
4     1             near   15
5     1  to the right of   10
6     2   to the left of    5
7     2  to the right of    3
8     3  to the right of    4
9     3   to the left of    0
10    3   to the left of    6
11    3   to the left of    5
12    3   to the left of    2
13    3  to the right of   13
14    4   to the left of    3
15    4               on    3
16    5  to the right of    3
17    5   to the left of    8
18    5  to the right of    0
19    5   to the left of   14
20    5  to the right of   13
21    5  to the right of    6
22    5  to the right of    2
23    6  to the right of   13
24    6   to the left of    5
25    6  to the right of    3
26    6  to the right of    0
27    8  to the right of    5
28    8  to the right of   10
29    9  to the right of   10
30   10   to the left of    1
31   10   to the left of    8
32   10   to the left of   14
33   10   to the left of   12
34   10   to the left of    9
35   12  to the right of   10
36   13   to the left of    3
37   13   to the left of    0
38   13   to the left of    5
39   13   to the left of    6
40   14  to the right of    5
41   14               on   15
42   14  to the right of   10
43   15             near    1