Which place is it?
It is a field.
    src        edge_attr  dst
0     0          holding    3
1     0   to the left of    2
2     2  to the right of    0
3     3  to the right of    8
4     3   to the left of    4
5     3  to the right of   15
6     3  to the right of    5
7     4  to the right of    3
8     5   to the left of    3
9     6        on top of    9
10    8  to the right of   10
11    8   to the left of    3
12   10   to the left of    8
13   10   to the left of   15
14   15         watching    0
15   15   to the left of    3
16   15  to the right of   10
17   16        on top of   17