A man talking while a lady is working out.
A man is talking.
a man is talking is a rephrase of a man talking
exists e1 p1 x1 x2.(a_topic(x1) & exists e2 s1 x3.(a_out(s1) & Manner(e2,s1) & Actor(e2,x3) & v_work(e2) & n_lady(x3)) & while(e1,p1) & Actor(e1,x2) & v_talk(e1) & (x1 = x2) & n_man(x1))
exists e1 x1.(Actor(e1,x1) & v_talk(e1) & n_man(x1))