A blond man and woman are having a discussion while smoking outdoors.
A baker creating rolls.
In sentence 1 a man AND a woman are performing an action, plural, two people. In sentence 2 a baker, singular, one person, is performing an action.
exists e2 e1 s1 x1 x2 x3 x4 x5.(while(e1,e2) & Theme(e2,x5) & Actor(e2,x1) & v_smoke(e2) & n_outdoors(x5) & Theme(e1,x4) & Actor(e1,x1) & v_have(e1) & n_discussion(x4) & n_woman(x3) & n_man(x2) & subset_of(x3,x1) & subset_of(x2,x1) & a_blond(s1) & Theme(s1,x1))
exists e1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_create(e1) & n_roll(x3) & (x1 = x2) & n_baker(x1))