A teacher teaching about folic acid and how it helps neurulation.
A teacher is teaching a high school biology course.
A teacher teaching about folic acid, does not imply that the teacher is teaching in high school.
(x)
exists e1 s1 x1 x2 x3 x4.(Theme(e1,x2) & Actor(e1,x1) & v_teach(e1) & n_course(x2) & of(x2,x4) & n_biology(x4) & of(x2,x3) & n_school(x3) & a_high(s1) & Theme(s1,x2) & n_teacher(x1))