Statements: Some villages are towns.
Some towns are huts.
All huts are rivers.
Some rivers are tents.
Conclusions:I. some tents are towns.
II. Some rivers are towns.
III. Some huts are villages.
Some towns are huts(I) + All huts are rivers(A) ⇒ Some towns are rivers(I) + Some rivers are tents(I) ⇒ No Conclusion. Hence conclusion I does not follow. Some towns are huts(I) + All huts are rivers(A) ⇒ Some towns are rivers(I) ⇒ Conversion ⇒ Some rivers are towns(I). Hence conclusion II follows. Some villages are towns (I) + some towns are huts (I) ⇒ No conclusion. Hence conclusion III does not follow.
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