A person may contribute to a (war effort).Logical formLearned from12 sentences. A person may contribute that something-is-the-case.Logical formLearned from12 sentences. Factors may contribute to violence.Logical formLearned from12 sentences. Some factor may contribute to a decline.Logical formLearned from12 sentences. Some persons may contribute to work.Logical formLearned from12 sentences. Factors may contribute to problems.Logical formLearned from12 sentences. A person may contribute ideas.Logical formLearned from12 sentences. A male may contribute to a discussion.Logical formLearned from12 sentences. A male may contribute some ideas.Logical formLearned from12 sentences. A factor may contribute to a success.Logical formLearned from12 sentences. (Carbon dioxide) may contribute to (climate change).Logical formLearned from12 sentences. A male may contribute to studies.Logical formLearned from12 sentences. A name may be contributed by a country.Logical formLearned from12 sentences. Some batsmen may contribute some runs.Logical formLearned from12 sentences. A chastisement may contribute to a healing of victims.Logical formLearned from12 sentences.