A same meaning or not problem: OPTIONS:
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In February 2007 Barbara Fischinger performed on the original Lumigraph in Frankfurt , and in 2012 in Amsterdam .
In February 2007 , Barbara Fischinger performed at the Original Lumigraph in Frankfurt and in Amsterdam in 2012 .
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[A]: yes

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Extremal states are usually called extremal states . Note that a condition is a pure state if and only if it is convex in the pure state group .
Extremal states are usually called pure states . Note that a state is a pure state if and only if it is extremal in the convex set of states .
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[A]: no

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Fowey Rocks Light is located seven miles southeast from Cape Florida on Key Biscayne .
Fowey Rocks Light is located seven miles southeast of Key Biscayne on Cape Florida .
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[A]: no

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Among the bugis dealers were also members of the nobility like Raja Ali Haji , who married the daughter of Engku Karaeng Talibak .
Among the Bugis traders were also members of the nobility like Raja Ali Haji who married the daughter of Engku Karaeng Talibak .
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[A]:
yes