116447
He formulated the marginal theory of value ( independently of William Stanley Jevons and Carl Menger ) and pioneered the development of general equilibrium theory .
 person: William Stanley Jevons; person: Carl Menger
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: William Stanley Jevons, Carl Menger 
Answer:
 person: William Stanley Jevons; person: Carl Menger