What is the color of the light house?
The light house is white.
    src        edge_attr  dst
0     0  to the right of    4
1     0  to the right of    2
2     1  to the right of    2
3     1  to the right of    3
4     1  to the right of   13
5     1  to the right of    5
6     1  to the right of    6
7     1  to the right of   10
8     2            above   12
9     2      in front of    7
10    2      in front of    9
11    2   to the left of    7
12    2   to the left of    0
13    2   to the left of    1
14    2       resting on   11
15    3   to the left of    1
16    4  to the right of    5
17    4   to the left of    0
18    5               on    4
19    5   to the left of    4
20    5   to the left of    1
21    6   to the left of    1
22    7  to the right of    2
23    9           behind    2
24    9   to the left of   13
25   10   to the left of    1
26   13               in    8
27   13  to the right of    9
28   13   to the left of    1