What is the sign on?
The sign is on the door.
    src        edge_attr  dst
0     2  to the right of    5
1     2   to the left of    4
2     2   to the left of    3
3     3  on the front of    4
4     3   to the left of    6
5     3  to the right of    2
6     3               on    4
7     4  to the right of    5
8     4  to the right of    2
9     4             near    5
10    5   to the left of    2
11    5   to the left of    4
12    5          next to    4
13    6               on    4
14    6  to the right of    3