Is the brown tower in front of a castle?
Yes, the tower is in front of a castle.
    src        edge_attr  dst
0     0      in front of    9
1     1  to the right of   12
2     1   to the left of   10
3     1  to the right of   13
4     1  to the right of    6
5     1  to the right of   15
6     2           behind   13
7     2  to the right of   12
8     2   to the left of   10
9     2  to the right of   13
10    2  to the right of    6
11    2  to the right of   15
12    3  to the right of   13
13    5  to the right of    7
14    6   to the left of    1
15    6   to the left of    2
16    6  to the right of   11
17    6  to the right of   16
18    7   to the left of    5
19    7   to the left of   13
20    8  to the right of    9
21    9  to the right of   13
22    9   to the left of    8
23    9           behind   14
24    9               by   13
25    9           behind    0
26   10  to the right of    2
27   10               in    7
28   10  to the right of    1
29   11   to the left of   15
30   11   to the left of    6
31   11   to the left of   12
32   11               on   13
33   12  to the right of   11
34   12   to the left of    2
35   12               on   13
36   12   to the left of    1
37   12  to the right of   16
38   13             with   11
39   13             with   12
40   13   to the left of    9
41   13  to the right of    7
42   13      in front of    2
43   13   to the left of    3
44   13   to the left of    2
45   13   to the left of    1
46   13           beside    9
47   14      in front of    9
48   15   to the left of    1
49   15  to the right of   11
50   15   to the left of    2
51   15  to the right of   16
52   16   to the left of    6
53   16   to the left of   15
54   16   to the left of   12