Vyshak wrote:
A. that had been gathered by the Mars Pathfinder mission, revealing traces of water on the Martian surface and generating excited debate about the possibility of life on the planet, more recent evaluations have cast doubt on those speculations, suggesting - 'Although' should be followed by a clause.
B. gathered by the Mars Pathfinder mission revealed traces of water on the Martian surface and generated excited debate about the possibility of life on the planet, but more recent evaluations have
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