What animal is in the glass made out of glass?
The cats are in the glass.
    src        edge_attr  dst
0     1               of   10
1     1   to the left of    7
2     1  to the right of    4
3     2               of   10
4     2  to the right of    4
5     3               of   10
6     3   to the left of    7
7     3  to the right of    4
8     4   to the left of    3
9     4   to the left of    1
10    4   to the left of    7
11    4   to the left of   10
12    4   to the left of    2
13    4   to the left of    9
14    4   to the left of    5
15    5               of   10
16    5  to the right of    4
17    5   to the left of    7
18    6               of   10
19    7               of   10
20    7  to the right of    1
21    7  to the right of    3
22    7  to the right of    4
23    7  to the right of    5
24    7  to the right of    9
25    8               in    0
26    9   to the left of    7
27    9               of   10
28    9  to the right of    4
29   10  to the right of    4
30   10               of    4