In Dill town, you can only buy office products at Rosemary's Store, and you can only buy blossoms at Carrot's Store. In a strange coincidence, any time Basil is at Rosemary's Store, Lily is at Rosemary's Store, and any time he is at Carrot's Store, she is at Rosemary's Store. Basil is buying flower of the dong quai plant. Where is Lily?