Which color is the tall building, brown or silver?
The tower is brown.
   src        edge_attr  dst
0    0               on    7
1    0   on the side of    7
2    0  to the right of    5
3    2               of    4
4    4  on the front of    7
5    4               on    7
6    5   to the left of    0
7    5   to the left of    7
8    5            above    5
9    7  to the right of    5