Who is standing by the wall?
The gentleman is standing by the wall.
    src        edge_attr  dst
0     0   to the left of    6
1     0   to the left of   11
2     1   to the left of    9
3     1   to the left of   11
4     3      standing on   12
5     4  to the right of    5
6     5   to the left of    9
7     5   to the left of    4
8     6   to the left of   11
9     6  to the right of    7
10    6  to the right of    0
11    7   to the left of    6
12    7   to the left of   11
13    8           around   10
14    9  to the right of   14
15    9  to the right of    5
16    9  to the right of    1
17    9               of    3
18   11  to the right of    0
19   11  to the right of    6
20   11  to the right of    7
21   11  to the right of   14
22   11  to the right of    1
23   14          wearing   13
24   14          wearing    5
25   14          wearing    4
26   14   to the left of   11
27   14   to the left of    9
28   14          wearing    1
29   14      standing by    2
30   14          wearing    8
31   15               of   14