14385
Al-Bīrūnī , early in the 11th - century CE , also used eclipse data , but developed an alternative method involving an early form of triangulation .
 Al-Bīrūnī
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:
 Al-Bīrūnī