premise: Nurses in a medical setting conversing over a plastic cup.
hypothesis: The nurses are eating lunch.
explanation_1: Nurses that are eating lunch would be out of a medical setting. Medical settings aren't a good place for food, and it could contaminate surfaces or be contaminated
explanation_2: One cannot eat in a medical setting because of regulations.
explanation_3: you don't normally see people eating whom they are working in a medical setting. Eating and conversing are 2 different actions.  Eating implies food, which is not usually found in a plastic cup,
premise_logic: exists s1 s2 x1 x2 x3 x4.(a_topic(x1) & in(x1,x2) & over(x2,x4) & n_cup(x4) & a_plastic(s2) & Theme(s2,x4) & Time(x2,x3) & n_conversing(x3) & n_setting(x2) & a_medical(s1) & Theme(s1,x2) & n_nurse(x1))
hypothesis_logic: exists e1 x1 x2.(n_nurse(x1) & Theme(e1,x2) & Actor(e1,x1) & v_eat(e1) & n_lunch(x2))
premise_sim: exists s1 s2 x1 x2 x3 x4.(over(x2,x4) & n_setting(x2) & n_nurse(x1) & n_cup(x4) & n_conversing(x3) & in(x1,x2) & a_topic(x1) & a_plastic(s2) & a_medical(s1) & Time(x2,x3) & Theme(s2,x4) & Theme(s1,x2))
hypothesis_sim: exists e1 x1 x2.(v_eat(e1) & n_nurse(x1) & n_lunch(x2) & Theme(e1,x2) & Actor(e1,x1))