A man in a very nice great button up shirt is signing into a microphone.
The man is not speaking
A man singing means that he is not speaking.
exists e1 s1 s2 x1 x2 x3 x4.(into(e1,x4) & n_microphone(x4) & Actor(e1,x1) & v_sign(e1) & up(x1,x3) & n_shirt(x3) & in(x1,x2) & n_button(x2) & a_great(s2) & Theme(s2,x2) & a_nice(s1) & Theme(s1,x2) & r_very(x2) & n_man(x1))
exists x1.(n_man(x1) & -exists e1.(Actor(e1,x1) & v_speak(e1)))