Is there a black laptop or cellphone?
No, there is a laptop but it is white.
    src        edge_attr  dst
0     0  to the right of   10
1     0  to the right of    6
2     1  to the right of   11
3     2  to the right of    7
4     3  to the right of   10
5     3  to the right of    6
6     3  to the right of   11
7     4   to the left of    8
8     6   to the left of    0
9     6   to the left of    3
10    7   to the left of    2
11    7   to the left of    8
12    8  to the right of    4
13    8  to the right of    7
14   10   to the left of    3
15   10   to the left of    0
16   11   to the left of    1
17   11   to the left of    3