55000
In 1795 , Francisco Salva Campillo proposed an electrostatic telegraph system .
 Francisco Salva Campillo
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:
 Francisco Salva Campillo