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