A young male who appears to be in his late 20's or early 30's is smiling while about to bite into a sandwich.
The man is eating a roast beef sandwich.
Just because a young male who appears to be in his late 20's or early 30's is smiling while about to bite into a sandwich does not mean it is a roast beef sandwich.
exists e3 e1 e2 p1 p2 s1 s2 s3 x1 x2 x3 x4.(while(e2,e3) & Topic(e3,p2) & Actor(e3,x1) & v_about(e3) & exists e4 x5.(into(e4,x5) & n_sandwich(x5) & Actor(e4,x1) & v_bite(e4)) & Actor(e2,x1) & v_smile(e2) & Topic(e1,p1) & Actor(e1,x2) & v_appear(e1) & exists p3.in(x2,x4) & n_'s(x4) & n_date(x4) & a_date_day_30(x4) & a_date_day_30(x4) & a_early(s3) & Theme(s3,x4) & of(x4,x3) & n_date(x3) & a_date_day_20(x3) & a_date_day_20(x3) & a_late(s2) & Theme(s2,x3) & of(x3,x1) & n_male(x1) & (x1 = x2) & n_male(x1) & a_young(s1) & Theme(s1,x1))
exists e1 x1 x2 x3 x4.(n_man(x1) & Theme(e1,x2) & Actor(e1,x1) & v_eat(e1) & n_sandwich(x2) & of(x2,x4) & n_beef(x4) & of(x2,x3) & n_roast(x3))