A teacher, wearing a checkered shirts, writes on the chalkboard.
A teacher is writing a math problem on a chalkboard.
A teacher is writing something chalkboard
exists e1 e2 s1 x1 x2 x3 x4.(n_chalkboard(x4) & on(e2,x4) & Actor(e2,x1) & v_write(e2) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_shirt(x3) & a_checkered(s1) & Theme(s1,x3) & (x1 = x2) & n_teacher(x1))
exists e1 x1 x2 x3 x4.(Theme(e1,x2) & Actor(e1,x1) & v_write(e1) & on(x2,x4) & n_chalkboard(x4) & n_problem(x2) & of(x2,x3) & n_math(x3) & n_teacher(x1))