Observers may speculate that something-is-the-case.Logical formLearned from313 sentences. A person can be an observer.Logical formLearned from313 sentences. Observers can be longtime.Logical formLearned from302 sentences. Some observers may fear that something-is-the-case.Logical formLearned from291 sentences. An observer can be passive.Logical formLearned from282 sentences. Observers may warn.Logical formLearned from273 sentences. Observers can be trained.Logical formLearned from273 sentences. Some observers may predict that something-is-the-case.Logical formLearned from271 sentences. An observer can be careful.Logical formLearned from270 sentences. An (observer force) may pertain-to an international-political-entity.Logical formLearned from268 sentences. Observers can be in a world-city.Logical formLearned from258 sentences. Observers can be knowledgeable.Logical formLearned from256 sentences. Observers can be interested.Logical formLearned from252 sentences. Observers can be keen.Logical formLearned from235 sentences. An observer can be interested.Logical formLearned from235 sentences.