Do you see any phones under the glass?
Yes, there is a phone under the glass.
     src        edge_attr  dst
0      0  to the right of   16
1      0  to the right of   18
2      0   to the left of    4
3      0   to the left of    1
4      0  to the right of   11
..   ...              ...  ...
101   20  to the right of   21
102   21   to the left of   17
103   21   to the left of   20
104   21   to the left of    8
105   21   to the left of   10

[106 rows x 3 columns]