A continent may contribute some percent.Logical formLearned from9 sentences. Proposals may contribute to a (peace process).Logical formLearned from9 sentences. Weightlessness may contribute to back pain.Logical formLearned from9 sentences. Nations may contribute peacekeepers.Logical formLearned from9 sentences. Sales may contribute to a current-account surplus.Logical formLearned from8 sentences. Some factors may contribute to a crash.Logical formLearned from8 sentences. A country may contribute to a force.Logical formLearned from8 sentences. A commitment may contribute to improvements.Logical formLearned from8 sentences. Factors may contribute to prices.Logical formLearned from8 sentences. A factor may contribute to growth.Logical formLearned from8 sentences. A country may contribute to peace.Logical formLearned from8 sentences. A northeast may contribute a batch of steel.Logical formLearned from8 sentences. A relationship may contribute to peace.Logical formLearned from8 sentences. A teammate may contribute some points.Logical formLearned from8 sentences. Cooperation may contribute to stability.Logical formLearned from8 sentences.