What color is the stone building?
The castle is brown.
    src        edge_attr  dst
0     2               by    0
1     2  to the right of    4
2     2        on top of    0
3     4               in    7
4     4   to the left of    2
5     5          wearing    3
6     5          wearing    1
7     5           flying    6
8     5               in    0
9     5   to the left of    8
10    5               on    0
11    5       walking on    0
12    6               in    7
13    6        flying in    7
14    8               on    0
15    8  to the right of    5