The speaker is introducing the new products on a fair.
a speaker is in a cafe eating
cafe is different from a fair.
exists e1 s1 x1 x2 x3.(n_product(x2) & a_new(s1) & Theme(s1,x2) & n_speaker(x1) & on(e1,x3) & n_fair(x3) & Theme(e1,x2) & Actor(e1,x1) & v_introduce(e1))
exists p1 x1.(exists x2 x3.(in(x1,x2) & n_eating(x2) & of(x2,x3) & n_cafe(x3)) & n_speaker(x1))