Is there an elephant in the river?
Yes, there is an elephant in the river.
    src        edge_attr  dst
0     1  to the right of   14
1     1    drinking from   13
2     1  to the right of    7
3     1  to the right of   15
4     3  to the right of    8
5     5        on top of    0
6     6   to the left of   12
7     6  to the right of   10
8     7  to the right of    9
9     7   to the left of    1
10    7   to the left of   11
11    8   to the left of    3
12    9   to the left of   15
13    9   to the left of    7
14   10   to the left of   12
15   10   to the left of    6
16   11  to the right of   14
17   11  to the right of    7
18   11  to the right of   15
19   12               in   13
20   12               in    4
21   12  to the right of    6
22   12   to the left of   14
23   12   to the left of   15
24   12  to the right of   10
25   14               in   13
26   14               in    4
27   14   to the left of   11
28   14   to the left of    1
29   14  to the right of   12
30   14   to the left of   15
31   14         crossing   13
32   15  to the right of    9
33   15   to the left of   11
34   15  to the right of   12
35   15   to the left of    1
36   15  to the right of   14