Which place is it?
It is a yard.
    src        edge_attr  dst
0     0   to the left of   13
1     1   to the left of   13
2     2   to the left of    3
3     2  to the right of   10
4     3  to the right of    2
5     3  to the right of   15
6     3  to the right of    6
7     6               of   15
8     6   to the left of    3
9     8   to the left of   12
10    8  to the right of   16
11    8   to the left of   14
12    9  to the right of   16
13    9   to the left of   14
14    9  to the right of   11
15   10   to the left of    2
16   11   to the left of   14
17   11   to the left of    9
18   11   to the left of   12
19   12  to the right of   11
20   12  to the right of    8
21   12  to the right of   16
22   13  to the right of    1
23   13  to the right of    0
24   14  to the right of    9
25   14  to the right of   11
26   14  to the right of    8
27   15   to the left of    3
28   16   to the left of    9
29   16   to the left of   12
30   16   to the left of    8