Is the tower both gray and tall?
Yes, the tower is gray and tall.
    src        edge_attr  dst
0     0   to the left of    7
1     0  to the right of    1
2     0  to the right of    3
3     1   to the left of    7
4     1   to the left of    0
5     1  to the right of    3
6     2  to the right of   13
7     3   to the left of    0
8     3  to the right of   12
9     3   to the left of    1
10    4  to the right of    9
11    4   to the left of    7
12    4  to the right of    5
13    5   to the left of    9
14    5   to the left of    4
15    7  to the right of    1
16    7  to the right of    0
17    7  to the right of    4
18    7  to the right of    9
19    7  to the right of   11
20    9   to the left of    7
21    9   to the left of    4
22    9  to the right of    5
23   11   to the left of    7
24   12   to the left of    3
25   13   to the left of    2