3569
Iron releases the largest energy if any 56 nucleons are allowed to build a nuclide - changing one to another if necessary , The highest binding energy per hadron , with the hadrons starting as the same number of protons " Z " and total nucleons " A " as in the bound nucleus , is Ni .
 location: Ni
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:
 location: Ni