A man breakdances as a crowd watches.
A man is playing basketball at the Olympics.
Breakdancing is a dance while basketball is a sport. If a basketball player stopped what they were doing to breakdance they wouldn't last as a basketball player very long. Two different activities.
exists e1 p1 x1.(exists e2 x2.(Actor(e2,x2) & v_watch(e2) & n_crowd(x2)) & as(e1,p1) & Actor(e1,x1) & v_breakdance(e1) & n_man(x1))
exists e1 x1 x2 x3.(ne_geo_olympics(x3) & at(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_basketball(x2) & n_man(x1))