# A city with two things and four wall. # Window title Chicago # first street, first avenue, num streets, num avenues 0 0 10 10 # intersection size 38 becker.robots.Thing 6 4 becker.robots.Thing 6 4 becker.robots.Wall 6 4 East becker.robots.Wall 5 4 East becker.robots.Wall 5 4 North becker.robots.Wall 5 5 North