Arsenic may prove effective against a form of cancer.Logical formLearned from6 sentences. A merger may prove that something-is-the-case.Logical formLearned from6 sentences. Gains may prove temporary.Logical formLearned from6 sentences. An (oil embargo) may prove that something-is-the-case.Logical formLearned from6 sentences. Rounds may prove that something-is-the-case.Logical formLearned from6 sentences. A sensibility may prove alluring.Logical formLearned from6 sentences. Immigration may prove wrong.Logical formLearned from6 sentences. A (trade imbalance) may prove a counterbalance to domestic demand.Logical formLearned from6 sentences. A fall of markets may prove a wisdom of a model.Logical formLearned from6 sentences. Shows may prove that something-is-the-case.Logical formLearned from6 sentences. A float may prove unmanageable.Logical formLearned from6 sentences. The past may prove impossible.Logical formLearned from6 sentences. Tragedy may prove unsinkable.Logical formLearned from6 sentences. (Snow storms) may prove a theory.Logical formLearned from6 sentences. A male may prove a guilt.Logical formLearned from6 sentences.