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The springtime darner ( " Basiaeschna janata " ) , for example , is suddenly very common in the spring , but disappears a few weeks later and is not seen again until the following year .
 springtime darner
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 springtime darner