66698
There is no doubt that " PM " is of great importance in the history of mathematics and philosophy : as Irvine has noted , it sparked interest in symbolic logic and advanced the subject by popularizing it ; it showcased the powers and capacities of symbolic logic ; and it showed how advances in philosophy of mathematics and symbolic logic could go hand-in-hand with tremendous fruitfulness .
 person: Irvine
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: Irvine 
Answer:
 person: Irvine