Is the star blue?
Yes, the star is blue.
    src        edge_attr  dst
0     1  to the right of   17
1     2   to the left of   18
2     2   to the left of   14
3     3   to the left of   18
4     3   to the left of   14
5     4               at   12
6     5   to the left of    6
7     6  to the right of    5
8     7   to the left of   17
9     9   to the left of   17
10    9        parked on    2
11   11         carrying    8
12   14  to the right of    2
13   14  to the right of    3
14   14   on the side of    9
15   17   to the left of    1
16   17  to the right of    7
17   17  to the right of    9
18   18  to the right of    3
19   18  to the right of    2
20   18               on    3