Problem: In September 2005 , Vertical Communications was acquired by Comdial .
Comdial was acquired in September 2005 by Vertical Communications .
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A: no

Problem: Dunkerton moved from Herefordshire to London at the age of fourteen .
Dunkerton moved from London to Herefordshire at the age of fourteen .
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A: no

Problem: B is the common term between the two premises ( the middle term ) but is never distributed , so this syllogism is invalid .
B is the middle term between the two premises ( the common term ) , but is never distributed , so that syllogism is invalid .
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A:
no