1436
Between 1767 and 1770 , he presented five papers to the Royal Society from these initial experiments ; the first four papers explored coronal discharges and other phenomena related to electrical discharge , while the fifth reported on the conductivity of charcoals from different sources .
 organization: Royal Society
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 organization: Royal Society