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