What is in front of the tree?
The stop sign is in front of the tree.
    src        edge_attr  dst
0     0  to the right of    9
1     0  to the right of    4
2     0  to the right of   11
3     0  to the right of    7
4     1             near   12
5     1  to the right of    7
6     1  to the right of   11
7     1          next to   12
8     1  to the right of    8
9     2             near   12
10    2           beside   12
11    2  to the right of    8
12    2  to the right of    7
13    2  to the right of   10
14    2  to the right of   11
15    4   to the left of    0
16    4               on    3
17    4             near   12
18    5  to the right of   10
19    5  to the right of    8
20    5      in front of   10
21    5             near   12
22    5               on    0
23    6               on   10
24    7             near   12
25    7             near   11
26    7   to the left of   12
27    7  to the right of   11
28    7   to the left of    1
29    7   to the left of    0
30    7   to the left of    2
31    8             near   12
32    8   to the left of    5
33    8   to the left of    2
34    8   to the left of    1
35    8             near    9
36    9             near    8
37    9   to the left of    0
38    9   to the left of   12
39   10           behind    5
40   10   to the left of    2
41   10   to the left of    5
42   11             near    7
43   11   to the left of    7
44   11             near   12
45   11   to the left of   12
46   11   to the left of    2
47   11   to the left of    1
48   11   to the left of    0
49   11               at    8
50   12             near    2
51   12  to the right of    7
52   12             near    1
53   12             near    7
54   12             near    5
55   12  to the right of    9
56   12  to the right of   11
57   12             near    4
58   12             near    8
59   12             near   11