You have two guys in a breakdance battle and one of them is doing a move called the hollow back.
the guys are performing for a crowd
Two people in a breakdance battle are not necessarily performing for a crowd.
exists e3 e1 e2 s1 x1 x2 x3 x4 x5 x6 x7.(n_hollow(x7) & a_back(s1) & Manner(e3,s1) & Theme(e3,x5) & Actor(e3,x4) & v_do(e3) & Recipient(e2,x7) & Theme(e2,x6) & v_call(e2) & (x5 = x6) & n_move(x5) & of(x4,x1) & n_thing(x1) & n_thing(x4) & card_eq_1(x4) & Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & in(x2,x1) & n_battle(x1) & of(x1,x3) & n_breakdance(x3) & n_guy(x2) & card_eq_2(x2) & n_person(x1))
exists e1 x1 x2.(n_guy(x1) & for(e1,x2) & n_crowd(x2) & Actor(e1,x1) & v_perform(e1))