Investigations can be open-ended.Logical formLearned from38 sentences. A policy can be open-ended.Logical formLearned from37 sentences. A series can be constituted-of-or-filled-with open-ended questions.Logical formLearned from37 sentences. A term can be open-ended.Logical formLearned from36 sentences. A situation can be open-ended.Logical formLearned from36 sentences. An engagement can be open-ended.Logical formLearned from36 sentences. Mutual funds can be open-ended.Logical formLearned from35 sentences. A list can be open-ended.Logical formLearned from35 sentences. (Problem solvings) can be open-ended.Logical formLearned from34 sentences. Games can be open-ended.Logical formLearned from34 sentences. A guarantee can be open-ended.Logical formLearned from34 sentences. Presence can be open-ended.Logical formLearned from34 sentences. Questionings can be open-ended.Logical formLearned from33 sentences. A conclusion can be open-ended.Logical formLearned from33 sentences. A debate can be open-ended.Logical formLearned from33 sentences.