Football players wearing helmets practice defensive moves while their coach stands by ready to blow his whistle.
A group of players is practicing in front of their coach.
A group of players refers to football players and they being wearing helmets practicing defensive moves while their coach stands means of them practicing in front of their coach.
exists e1 p1 s1 s2 x1 x2 x3 x4 x5 x6 x7 x8 x9.(a_topic(x1) & by(e1,s2) & Topic(s2,p1) & Actor(s2,x3) & a_ready(s2) & exists e2.(Theme(e2,x9) & Actor(e2,x3) & v_blow(e2)) & n_whistle(x9) & of(x9,x1) & n_male(x1) & while(e1,x7) & n_stand(x7) & of(x7,x8) & n_coach(x8) & of(x7,x1) & n_thing(x1) & Theme(e1,x4) & Actor(e1,x3) & v_wear(e1) & n_move(x4) & a_defensive(s1) & Theme(s1,x4) & of(x4,x6) & n_practice(x6) & of(x4,x5) & n_helmet(x5) & (x1 = x3) & n_player(x1) & of(x1,x2) & n_football(x2))
exists e1 x1 x2 x3 x4.(in(e1,x3) & of(x3,x4) & n_coach(x4) & of(x4,x1) & n_thing(x1) & n_front(x3) & Actor(e1,x1) & v_practice(e1) & of(x1,x2) & n_player(x2) & n_group(x1))