premise: A group of attentive students are paying attention to a college lecture.
hypothesis: Some students are attending a class.
explanation_1: A group of students must consist of some students; college lectures almost always take place in the context of a class, so while being attentive and paying attention are not strictly synonymous with attending (being present at), it's safe to assume they are in class.
explanation_2: Group of attentive students are some students, and lecture is a form of class.
explanation_3: The students are attending a college lecture class.
premise_logic: exists e1 s1 x1 x2 x3 x4 x5.(to(e1,x4) & n_lecture(x4) & of(x4,x5) & n_college(x5) & Theme(e1,x3) & Actor(e1,x1) & v_pay(e1) & n_attention(x3) & of(x1,x2) & n_student(x2) & a_attentive(s1) & Theme(s1,x2) & n_group(x1))
hypothesis_logic: exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_attend(e1) & n_class(x2) & n_student(x1))
premise_sim: exists e1 s1 x1 x2 x3 x4 x5.(v_pay(e1) & to(e1,x4) & of(x4,x5) & of(x1,x2) & n_student(x2) & n_lecture(x4) & n_group(x1) & n_college(x5) & n_attention(x3) & a_attentive(s1) & Theme(s1,x2) & Theme(e1,x3) & Actor(e1,x1))
hypothesis_sim: exists e1 x1 x2.(v_attend(e1) & n_student(x1) & n_class(x2) & Theme(e1,x2) & Actor(e1,x1))