(Shellfish beds) may pertain-to a nation.Logical formLearned from3 sentences. A shellfish can be lucrative.Logical formLearned from3 sentences. A shellfish can be clean.Logical formLearned from3 sentences. A source can be for variety of shellfish.Logical formLearned from3 sentences. Catches can be constituted-of-or-filled-with shellfish.Logical formLearned from3 sentences. Amnesic (shellfish poisoning) may cause twitchings.Logical formLearned from3 sentences. A diet can be constituted-of-or-filled-with shellfish.Logical formLearned from3 sentences. (Fish and shellfish) may increase a risk.Logical formLearned from3 sentences. Shellfish may be contaminated by sewage.Logical formLearned from3 sentences. Connection can be with deaths of some (shellfish pickers).Logical formLearned from3 sentences. A (shellfish collector) may be trapped in tides.Logical formLearned from3 sentences. A (sea tragedy) may kill some (shellfish diggers).Logical formLearned from3 sentences. A ban can be on a gathering of shellfish.Logical formLearned from3 sentences. Shellfish can be vehicles.Logical formLearned from2 sentences. A warning can be against eating shellfish.Logical formLearned from2 sentences.