Is the plane in the air silver or purple?
The airplane is purple.
    src        edge_attr  dst
0     0   to the left of   13
1     0  to the right of    1
2     1   to the left of   13
3     1   to the left of    0
4     2               in   10
5     2            above   12
6     2      in front of    3
7     3           behind    5
8     3           behind    2
9     4               in    3
10    4  to the right of    6
11    6               in    3
12    6   to the left of    4
13    7  to the right of   14
14    7   to the left of    9
15    9  to the right of    7
16   11   to the left of   13
17   13  to the right of   15
18   13  to the right of    1
19   13  to the right of   11
20   13  to the right of    0
21   14   to the left of    7
22   15  to the right of   16
23   15   to the left of   13
24   16   to the left of   15