Are there any cell phones or computers that are not black?
No, there is a cell phone but it is black.
     src        edge_attr  dst
0      0   to the left of   18
1      0  to the right of   15
2      0  to the right of   14
3      0  to the right of   13
4      0   to the left of   21
..   ...              ...  ...
155   25  to the right of    9
156   25   to the left of    7
157   25   to the left of   19
158   25   to the left of   10
159   25   to the left of   23

[160 rows x 3 columns]