Task: Question Generation
Input (English): Background Paragraph: Artworks are sold at affordable prices [6] ranging from £5 to £1500. For many of the works, the price goes up as the edition sells out. The edition runs range from 30 to 10,000 editions. Each work comes with a digital certificate that is “signed, numbered and authenticated by the artist” [7][8] Once an edition is sold out, collectors can resell their works in the online marketplace. 
Story: The local art store had limited edition artworks for sale last week. They all had 200 pieces at the beginning of the week. By the end of the week, they started to sell out. There were only 2 of the Mona Lisa, 10 of The Starry Night, 20 of The Scream, 50 of The Night Watch, 120 of The Kiss, 150 of The Arnolfini Portrait, and 190 of The Girl With A Pearl Earring left.
Output (English): Which limited edition most likely had it's price increased: The Arnolfini Portrait or Mona Lisa?