1. All currently living dinosaurs are giant reptiles.
All giant reptiles are ectothermic animals.
Therefore, some ectothermic animals are currently living dinosaurs.
2. All survivalists are people who enjoy simulated war games.
No people who enjoy simulated war games are soldiers who have tasted the agony of real war.
Therefore, all soldiers who have tasted the agony of real war are survivalists.
3. No spurned lovers are Valentine's Day fanatics.
Some moonstruck romantics are Valentine's Day fanatics.
Therefore, some moonstruck romantics are not spurned lovers.
4. No theocracies are regimes open to change.
All theocracies are governments that rule by force.
Therefore, some governments that rule by force are not regimes open to change.
5. Some snowflakes are not uniform solids.
All snowflakes are six-pointed crystals.
Therefore, some six-pointed crystals are not uniform solids.
Use Venn diagrams to determine whether the following standard-form categorical syllogisms are valid from the Boolean standpoint, valid from the Aristotelian standpoint, or invalid. Then, identify the mood and figure, and cross-check your answers with the tables of valid syllogisms found in Section 5.1.