Which kind of device is to the left of the picture?
The device is a speaker.
     src        edge_attr  dst
0      0  to the right of   19
1      0  to the right of    2
2      0  to the right of   18
3      2   to the left of   18
4      2   to the left of   19
..   ...              ...  ...
126   31   to the left of   26
127   31  to the right of    3
128   32   to the left of   29
129   32   to the left of   26
130   32  to the right of    3

[131 rows x 3 columns]