Gerra Centro, Lago Maggiore

We need to compose using input. Site name Gerra Centro, Lago Maggiore. High relevance: location in Lake Maggiore in northern Italy/Switzerland border. Dive sites in lake? Provide generic description of lake site: clear freshwater, temperate, rocky drop-offs, submerged vegetation? The instruction: avoid inventing features. Should not invent reefs. Lake species: freshwater fish like perch, pike, black bass. Depths unknown. We should not invent depths. If unknown, leave min_depth/max_depth as null. dive_types: maybe 'cave','drift','reef' not appropriate. In a lake, could be 'sand','muck','crawl' But allowed types list; we can choose none. Better to keep empty array if not known. Water_type unknown? Input has water in lake; not specified. water_type field only output if input has water_type: