A number of key lakes may suffer outbreaks of blue algae.Logical formLearned from3 sentences. Some (sq km) of a (sea area) may be covered by algae.Logical formLearned from3 sentences. Some percent of a (sailing venue) may be covered by algae.Logical formLearned from3 sentences. An algae can be in water.Logical formLearned from3 sentences. An algae can be accumulated.Logical formLearned from3 sentences. Pieces can be constituted-of-or-filled-with algae.Logical formLearned from3 sentences. Blue-green algae can be in a lake.Logical formLearned from3 sentences. Blue-green algae may exist in (water bodies).Logical formLearned from3 sentences. An (algae pollution) can be blue.Logical formLearned from3 sentences. A blue algae can be toxic.Logical formLearned from3 sentences. Blue-green algae may cause (water pollution).Logical formLearned from3 sentences. Amounts of algae may kill (sea creatures).Logical formLearned from3 sentences. A marine algae can be microscopic.Logical formLearned from3 sentences. An outbreak may pertain-to an (algae cut).Logical formLearned from3 sentences. Swathes can be constituted-of-or-filled-with blue algae.Logical formLearned from3 sentences.