What is common to the pole and the wall?
The color, both the pole and the wall are green.
    src        edge_attr  dst
0     1          wearing   15
1     1      in front of    4
2     1  to the right of   13
3     1  to the right of   11
4     1          wearing    9
5     1          wearing   14
6     1          holding   11
7     1          wearing    6
8     1  to the right of    5
9     1          wearing   10
10    1          wearing    0
11    2   to the left of   10
12    2   to the left of    7
13    4           behind    1
14    5   to the left of   14
15    5   to the left of    1
16    7  to the right of    2
17    8   to the left of   10
18    9  to the right of   11
19   10  to the right of   15
20   10  to the right of    8
21   10  to the right of    2
22   11   to the left of    1
23   11   to the left of    9
24   11   to the left of   14
25   13   to the left of    1
26   13   to the left of   14
27   14  to the right of   13
28   14  to the right of    5
29   14  to the right of   11
30   15   to the left of   10