Is the color of the clock tower different than the color of the bird?
Yes, the bird is green and the clock tower is white.
    src        edge_attr  dst
0     0   to the left of   14
1     0  to the right of    4
2     1  to the right of   15
3     1  to the right of    8
4     2   to the left of    3
5     2   to the left of   10
6     2   to the left of    5
7     3  to the right of    2
8     3  to the right of   12
9     4   to the left of    0
10    4   to the left of   14
11    5  to the right of    2
12    6   to the left of    9
13    8   to the left of   10
14    8   to the left of    1
15    8  to the right of   15
16    8   to the left of   14
17    9  to the right of    6
18    9               of   13
19   10  to the right of    8
20   10  to the right of    2
21   12   to the left of    3
22   14  to the right of    0
23   14  to the right of    4
24   14  to the right of    8
25   15   to the left of    8
26   15   to the left of    1