A rapper performs looking at the camera while someone else looks at him over his shoulder.
A rapper is shooting a music video.
Rappers can perform in front of cameras for reasons other than a music video, such as a documentary or news report.
exists e1 p1 x1 x2 x4.(n_shoulder(x4) & of(x4,x2) & n_male(x2) & n_male(x2) & n_camera(x2) & exists e2 p2.(exists e3 x3.(over(e3,x4) & at(e3,x2) & Actor(e3,x3) & v_look(e3) & r_else(x3) & n_person(x3)) & while(e2,p2) & at(e2,x2) & Actor(e2,x1) & v_look(e2)) & Topic(e1,p1) & Actor(e1,x1) & v_perform(e1) & n_rapper(x1))
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_shoot(e1) & n_video(x2) & of(x2,x3) & n_music(x3) & n_rapper(x1))