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