What is used to make the clock?
The clock is made of metal.
    src        edge_attr  dst
0     0   to the left of    3
1     0   to the left of   11
2     0   to the left of   10
3     0   to the left of   13
4     1  to the right of   13
..  ...              ...  ...
75   18  to the right of    9
76   18      in front of   13
77   18               at    7
78   18               on    8
79   18  to the right of   11

[80 rows x 3 columns]