5236
Signs of calcium carbonate have been detected at more than one location ( notably at Gusev and Huygens craters ) .
 location: Gusev; location: Huygens
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 location: Gusev; location: Huygens