What is the color of the rocks?
The rocks are dark.
    src        edge_attr  dst
0     0  to the right of   11
1     0   to the left of    5
2     3           behind   12
3     3             near   12
4     5  to the right of    0
5     6            below   14
6     7  to the right of   12
7     7   to the left of   13
8     7          holding   10
9     7   to the left of    9
10    7   to the left of    8
11    8  to the right of   13
12    8  to the right of   10
13    8  to the right of    7
14    9         carrying    8
15    9  to the right of    7
16    9  to the right of   13
17    9  to the right of   10
18   10   to the left of    9
19   10   to the left of    8
20   10   to the left of   13
21   11   to the left of    0
22   12   to the left of    7
23   12      in front of    3
24   12             near    3
25   13  to the right of   10
26   13   to the left of    9
27   13   to the left of    8
28   13  to the right of    7
29   14            above    6