Teacher:We would like you to classify each of the following sets of argument pairs (discussing Gun Control)  into either SIMILAR or NOT SIMILAR. A pair of arguments is considered SIMILAR if the arguments are about the same FACET (making the same argument), and is considered NOT SIMILAR if they do not have the same FACET. A FACET is a low level issue that often reoccurs in many arguments in support of the author's stance or in attacking the other author's position.
Teacher: Now, understand the problem? Solve this instance: Sent1: The opposite of "more guns = less crime is not true" is not "more guns = more crime".
 Sent2: All that does is imply that crime rate depends on more than just the presence/absence of guns - it disproves 'more guns = more crime' about as much as it disproves 'more guns = less crime'.
Student:
Similar