The man is playing guitar and sitting with a cat.
The man is sitting with a cat.
The man is playing guitar and sitting with a car is a rephrasing of the man is sitting with a cat.
exists e2 e1 x1 x2 x3.(n_man(x1) & with(e2,x3) & n_cat(x3) & Actor(e2,x1) & v_sit(e2) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_guitar(x2))
exists e1 x1 x2.(n_man(x1) & with(e1,x2) & n_cat(x2) & Actor(e1,x1) & v_sit(e1))