People gathered in an artist's studio.
an artist by himself thinking
Gathering means having people come to gathered and it is the opposite  than someone sitting by himself.
exists e1 x1 x2 x3.(in(e1,x3) & n_studio(x3) & of(x3,x2) & n_artist(x2) & Actor(e1,x1) & v_gather(e1) & n_people(x1))
exists e1 x1 x2 x3.(n_male(x2) & a_topic(x1) & Actor(e1,x3) & v_think(e1) & (x1 = x3) & by(x1,x2) & n_artist(x1))