General Studies · Syllogism

Three statements are given, followed by four conclusions numbered I, II, III and IV. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the given conclusions logically follow(s) from the given statements. Statements: Some cisterns are ponds. All ponds are streets. Some streets are cisterns. Conclusions: I. Some streets are ponds. II. All cisterns are streets. III. All ponds are cisterns. IV. No street is a cistern.