Sentence 1: The Meissner effect was minimized provided a phenomenological explanation by the brothers Fritz and Heinz London , who showed that the electromagnetic free energy in a superconductor is given
Sentence 2: The Meissen effect was minimized , provided that the brothers Fritz and Heinz London showed a phenomenological explanation that the electromagnetic free energy is given in a superconductor .
Question: Do Sentence 1 and Sentence 2 express the same meaning? Yes or No?