Are the pine trees on the cliff?
Yes, the pine trees are on the cliff.
    src        edge_attr  dst
0     0  to the right of   10
1     0   to the left of   16
2     0  to the right of    5
3     0   to the left of   13
4     0   to the left of    3
5     1               on    9
6     1  to the right of   18
7     3  to the right of    5
8     3  to the right of    0
9     3  to the right of    7
10    3  to the right of   15
11    4  to the right of   14
12    5   to the left of    3
13    5   to the left of    0
14    5   to the left of   16
15    5  to the right of   11
16    5   to the left of   17
17    5   to the left of   15
18    5  to the right of   10
19    5   to the left of   12
20    5   to the left of   13
21    5   to the left of    6
22    6  to the right of    5
23    6  to the right of    7
24    7   to the left of   12
25    7   to the left of   13
26    7   to the left of   17
27    7   to the left of    3
28    7   to the left of    6
29    8   to the left of    9
30    8   to the left of   18
31    9  to the right of    8
32   10   to the left of   15
33   10   to the left of    5
34   10   to the left of    0
35   10   to the left of   16
36   11   to the left of    5
37   12  to the right of   17
38   12  to the right of    5
39   12  to the right of    7
40   12  to the right of   13
41   13  to the right of    7
42   13   to the left of   12
43   13  to the right of    5
44   13  to the right of   17
45   13  to the right of    0
46   14   to the left of    4
47   15   to the left of    3
48   15  to the right of   10
49   15  to the right of    5
50   16  to the right of   10
51   16  to the right of    0
52   16  to the right of    5
53   17  to the right of    7
54   17  to the right of    5
55   17   to the left of   13
56   17   to the left of   12
57   18   to the left of    1
58   18  to the right of    8