Utterance-based reference chain

Round 2 (go to game round)

A: do you have picture of red fire truck in background with red van on left of picture

Round 3 (go to game round)

A: do you have a picture with a red van and a red firetruck in the distance

Round 4 (go to game round)

B: do you have a red firetruck?

Round 5 (go to game round)

A: yes firetruck