4897
It is endemic to the Magdalena River Valley in Colombia , and has been considered possibly extinct , as there are no confirmed records since the type specimen was collected in 1943 .
 location: Magdalena River Valley; location: Colombia
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 location: Magdalena River Valley; location: Colombia