Two brown dogs biting each other on sand.
The dogs are fighting over a bone.
Sentence 1 states two brown dogs.  It does not infer the generic of the dogs stated in sentence 2.  Fighting as stated in sentence 2 is not inferred from biting whidh is stated in sentence 1 and is a specific action.  Sentence 1 states it is on sand.  It does not infer over a bone or that a bone was involved.
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