49439
In 1790 ( although secondary sources give the date as 1773 or 1788 ) , the Marquis de Condorcet suggested that it would be easier to make the annular sections separately and assemble them on a frame ; but even that was impractical at the time .
 Marquis de Condorcet
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:
 Marquis de Condorcet