What do both the sheep and the house have in common?
The color, both the sheep and the house are white.
    src        edge_attr  dst
0     4   to the left of   16
1     4   to the left of   15
2     4  to the right of    9
3     4     covered with   18
4     4           behind    8
5     6   to the left of   15
6     6   to the left of   16
7     6  to the right of   13
8     7               in    2
9     8  to the right of    9
10    8      in front of    4
11    8   to the left of   15
12    8  to the right of   13
13    8               on    4
14    8               on    1
15    8   to the left of   11
16    9   to the left of    8
17    9   to the left of    4
18   11  to the right of    8
19   11  to the right of   17
20   11               on    1
21   13               on    1
22   13   to the left of    6
23   13   to the left of    8
24   15               on    4
25   15  to the right of    6
26   15  to the right of    4
27   15  to the right of    8
28   16  to the right of    4
29   16  to the right of    6
30   17               on    1
31   17   to the left of   11
32   18               on    4