Are there both a clock and a clock tower in the scene?
Yes, there are both a clock tower and a clock.
    src        edge_attr  dst
0     1  to the right of    9
1     1  to the right of   11
2     2   to the left of    3
3     2   to the left of    6
4     3  to the right of   11
5     3  to the right of    7
6     3  to the right of    2
7     3  to the right of    4
8     3  to the right of    9
9     4   to the left of    6
10    4   to the left of    3
11    5  to the right of    9
12    6  to the right of    2
13    6  to the right of    4
14    6  to the right of    9
15    7   to the left of    3
16    9   to the left of    5
17    9   to the left of    3
18    9   to the left of    6
19    9   to the left of    1
20   11   to the left of    1
21   11   to the left of    3