A female student resting her head on a textbook while sitting at a library.
A group is drinking at the bar
A female student implies one person, and a group implies many people.
exists e2 e1 s1 x1 x2 x3 x4 x5.(a_topic(x1) & while(e1,e2) & at(e2,x5) & n_library(x5) & Actor(e2,x2) & v_sit(e2) & on(e1,x4) & n_textbook(x4) & Theme(e1,x3) & Actor(e1,x2) & v_rest(e1) & n_head(x3) & of(x3,x1) & n_female(x1) & (x1 = x2) & n_student(x1) & a_female(s1) & Theme(s1,x1))
exists e1 x1 x2.(n_bar(x2) & at(e1,x2) & Actor(e1,x1) & v_drink(e1) & n_group(x1))