47949
This was the first time that humans had taken such a picture while actually behind the camera , and it has been credited as one of the inspirations of the first Earth Day in 1970 .
 time: Earth Day
Given options, please tell me the categories of all the listed entity words.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} 
 Entities: Earth Day 
Answer:
 time: Earth Day