A man and a child with audio and video equipment.
A sad man and a child with audio and video equipment.
You can be happy or able to feel other emotions, including being sad with audio and video equipment.
exists s1 x1 x2 x3 x4 x5.(a_topic(s1) & subset_of(x2,s1) & with(x2,x3) & n_equipment(x3) & of(x3,x5) & n_video(x5) & of(x3,x4) & n_audio(x4) & n_child(x2) & subset_of(x1,s1) & n_man(x1))
exists s1 s2 x1 x2 x3 x4 x5.(a_topic(s1) & subset_of(x2,s1) & with(x2,x3) & n_equipment(x3) & of(x3,x5) & n_video(x5) & of(x3,x4) & n_audio(x4) & n_child(x2) & subset_of(x1,s1) & n_man(x1) & a_sad(s2) & Theme(s2,x1))