Problem: S1: When it was printed commercially , illustrations by J. Augustus Knapp were added .
S2: If it was commercially added , illustrations were printed by J. Augustus Knapp .

Do S1 & S2 convey the same information?

A: no

Problem: S1: Stille is a river of Schmalkalden . It flows into the river Schmalkalde in the town Thuringia , Germany .
S2: Stille is a river of Schmalkalden It flows into the river Schmalkalde in the city of Thuringia , Germany .

Do S1 & S2 convey the same information?

A: yes

Problem: S1: Shawn told Shawn that his mother was not married and his father was still dead and told Stefano Colleen and Santo the day of Colleen ' s wedding .
S2: Shawn told Shawn that his mother was not married and his father was still dead and on the day of Colleen 's wedding , Stefano told Colleen and Santo .

Do S1 & S2 convey the same information?

A:
yes