A task can be arduous.Logical formLearned from2 863 sentences. A process can be arduous.Logical formLearned from1 332 sentences. A journey can be arduous.Logical formLearned from963 sentences. Negotiations can be arduous.Logical formLearned from593 sentences. Work can be arduous.Logical formLearned from470 sentences. Tasks can be arduous.Logical formLearned from297 sentences. Efforts can be arduous.Logical formLearned from276 sentences. A trip can be arduous.Logical formLearned from203 sentences. A trek can be arduous.Logical formLearned from162 sentences. A struggle can be arduous.Logical formLearned from161 sentences. Conditions can be arduous.Logical formLearned from158 sentences. A task can be arduous.Logical formLearned from157 sentences. Talks can be arduous.Logical formLearned from143 sentences. A climb can be arduous.Logical formLearned from139 sentences. A road can be arduous.Logical formLearned from130 sentences.