Sentence 1: From then until 1812, when the intrepid Swiss explorer John L. Burckhardt rediscovered Petra, it was almost totally forgotten.

Sentence 2: Petra grew in name and popularity until 1812 when a Swiss explorer destroyed it.

[a]. yes
[b]. it is not possible to tell
[c]. no
Is this second sentence entailed by the first sentence?
[c].