(Refinery profit margins) can be increased.Logical formLearned from7 sentences. (Safety margins) may pertain-to a person.Logical formLearned from7 sentences. (Profit margins) can be on sales of gasoline.Logical formLearned from7 sentences. (Profit margins) may improve in some areas of the world.Logical formLearned from7 sentences. (Profit margins) may suffer.Logical formLearned from7 sentences. (Profit margins) can be from chipmaking.Logical formLearned from7 sentences. A margin may pertain-to a quarter.Logical formLearned from7 sentences. A male may trail by margins.Logical formLearned from7 sentences. (Operating margin) may be improved to some percent.Logical formLearned from7 sentences. Margins may undergo erosions.Logical formLearned from7 sentences. Gross (profit margin) may widen.Logical formLearned from7 sentences. A candidate may lead by a margin.Logical formLearned from7 sentences. A size may pertain-to a (victory margin).Logical formLearned from7 sentences. (Profit margins) can be in petrochemicals.Logical formLearned from7 sentences. Margins can be for (polyethylene resin).Logical formLearned from7 sentences.