149203
The principal oscillation , which has a period of 21 hours and 30 minutes and an amplitude around 0.5 meters at the axis ' extremities , supplements the natural tidal cycle , so that the Adriatic sea has much more extreme tidal events than the rest of the Mediterranean .
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Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities:  
Answer:
 None