54073
In finance , an " option " is a contract which gives the " buyer " ( the owner ) the right , but not the obligation , to buy or sell an underlying asset or instrument at a specified strike price on or before a specified date .
 date
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:
 date