Two students kissing at a crosswalk.
Two students students at the library.
two students can not be kissing at a crosswalk and at the library.
exists e1 x1 x2 x3.(a_topic(x1) & at(e1,x3) & n_crosswalk(x3) & Actor(e1,x2) & v_kiss(e1) & (x1 = x2) & n_student(x1) & card_eq_2(x1))
exists x1 x2 x3 x4.(n_library(x1) & a_topic(x3) & Time(x3,x4) & n_student(x4) & n_student(x3) & card_eq_2(x3) & at(x2,x1) & n_student(x2) & card_eq_2(x2))