Is the round clock on the tower?
Yes, the clock is on the tower.
    src        edge_attr  dst
0     0               on    6
1     1   to the left of    5
2     1               of    1
3     1   to the left of    3
4     3  to the right of    1
5     5             with    0
6     5             with    6
7     5  to the right of    1
8     6               on    5
9     6               on    1
10    6               on    4