南非东海岸外海发生鲨鱼袭击，一名65岁游泳者死亡

1. 核心事实剥离

• 事件本质：Janine Lochrenberg 在南非东海岸外参加俱乐部晨泳时遭鲨鱼袭击并死亡；唯一潜在可交易变量是事件是否外溢为持续的安全、旅游或责任成本冲击，但原文未提供此类传导证据。〔SRC:"Swimmer, 65, killed in shark attack off South Africa's east coast"；"Janine Lochrenberg, 65, was out on her daily morning swim with her club when she was attacked, her family tell