A vessel may be loaded.Logical formLearned from19 sentences. A (research vessel) can be polar.Logical formLearned from19 sentences. A vessel can be hostile.Logical formLearned from19 sentences. A vessel may enter service.Logical formLearned from19 sentences. Vessels may undergo maintenance.Logical formLearned from19 sentences. Information can be on vessels.Logical formLearned from19 sentences. Some vessels can be in service.Logical formLearned from19 sentences. Persons may be allocated for construction of vessels.Logical formLearned from19 sentences. A middle may pertain-to a vessel.Logical formLearned from19 sentences. A vessel can be wonderful.Logical formLearned from19 sentences. Vessels can be hollow.Logical formLearned from19 sentences. A female can be a vessel of a military-or-other-action-organization.Logical formLearned from19 sentences. A vessel can be in a class.Logical formLearned from19 sentences. A pilot may pertain-to a vessel.Logical formLearned from19 sentences. Some classes can be constituted-of-or-filled-with vessels.Logical formLearned from19 sentences.