What's located on top of the dome?
The cross is on top of the dome.
    src        edge_attr  dst
0     0  to the right of    4
1     0  to the right of    6
2     1  to the right of    4
3     1  to the right of    6
4     3        on top of    1
5     3  to the right of    4
6     3  to the right of    6
7     4   to the left of    0
8     4   to the left of    9
9     4   to the left of    1
10    4   to the left of    3
11    4   to the left of    7
12    5   to the left of    9
13    6   to the left of    0
14    6   to the left of    3
15    6   to the left of    1
16    6   to the left of    9
17    7  to the right of    8
18    7  to the right of    4
19    7               on    9
20    8               on    9
21    8   to the left of    7
22    9  to the right of    5
23    9  to the right of    6
24    9  to the right of    4