What animal is on top of the rock that looks tan and gray?
The bear is on top of the rock.
    src        edge_attr  dst
0     2   to the left of    9
1     3           behind    4
2     4        on top of   16
3     4               on   16
4     4       leaning on   16
5     4      in front of    3
6     5            above   10
7     5  to the right of   15
8     5  to the right of   16
9     6               on    8
10    6       growing on    8
11    6   to the left of   16
12    9       sitting by   10
13    9           beside   10
14    9  to the right of    2
15   10            below    5
16   11   to the left of   12
17   12  to the right of   11
18   15   to the left of    5
19   16  to the right of    6
20   16   to the left of    5