A man is speaking to a group of people in a classroom.
A man is speaking to a group of people indoors.
A man is speaking to a group of people in a classroom which is indoors.
exists e1 x1 x2 x3 x4.(in(e1,x4) & n_classroom(x4) & to(e1,x2) & of(x2,x3) & n_people(x3) & n_group(x2) & Actor(e1,x1) & v_speak(e1) & n_man(x1))
exists e1 x1 x2 x3 x4.(to(e1,x2) & of(x2,x3) & Time(x3,x4) & n_indoor(x4) & n_people(x3) & n_group(x2) & Actor(e1,x1) & v_speak(e1) & n_man(x1))