Station board1:
board1 is a cutting board
board1 is occupied by robot1
board1 has nothing on it

Station stove1:
stove1 is a stove
stove1 has nothing on it
stove1 has no players at it

Item lettuce1:
lettuce1 is a head of lettuce
lettuce1 can be cut on a cutting board
lettuce1 has nothing above it
lettuce1 is directly on top of topbun1

Item topbun1:
topbun1 is a top bun
topbun1 is directly under lettuce1

Item patty1:
patty1 is a hamburger patty
patty1 can be cooked on a stove
patty1 has nothing above it
patty1 is directly on top of bottombun1

Item bottombun1:
bottombun1 is a bottom bun
bottombun1 is directly under patty1

Player robot1:
robot1 is a robot
robot1 is at board1
robot1 is holding nothing