44092
Completion of Albert Einstein 's unified field theory Sachs has attempted to complete Albert Einstein 's unified field theory by unifying the fields relativistically , then showing that Quantum Mechanics emerges under certain conditions .
 Sachs
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Sachs