What is the fence surrounding?
The fence is surrounding the parking lot.
    src        edge_attr  dst
0     0  to the right of   16
1     0   to the left of    4
2     0  to the right of   14
3     0  to the right of    5
4     1   to the left of   14
5     1  to the right of    6
6     2      surrounding   12
7     2          next to   10
8     4               on   10
9     4  to the right of   14
10    4  to the right of   16
11    4  to the right of    0
12    5   to the left of   16
13    5  to the right of   15
14    5  to the right of   13
15    5  to the right of    8
16    5   to the left of   14
17    5   to the left of    0
18    6   to the left of   14
19    6   to the left of    1
20    7  to the right of   14
21    7  to the right of   16
22    8   to the left of   15
23    8   to the left of    5
24    9   to the left of   11
25   10             near    2
26   11   to the left of   16
27   11  to the right of    9
28   11   to the left of   14
29   12    surrounded by    2
30   13   to the left of   14
31   13               of   10
32   13   to the left of    5
33   14  to the right of    6
34   14  to the right of    5
35   14   to the left of    0
36   14  to the right of   15
37   14   to the left of    7
38   14  to the right of   13
39   14  to the right of   11
40   14  to the right of    1
41   14   to the left of    4
42   14               of   10
43   15   to the left of   14
44   15   to the left of    5
45   15  to the right of    8
46   16  to the right of   11
47   16   to the left of    4
48   16   to the left of    0
49   16   to the left of    7
50   16  to the right of    5