6504
a pulsar powers the supernova remnant by confirming the existence of the point-like source and discovering a cloud of high-energy electrons around the central object .
 instrument agency: pulsar, remnant
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: word3, word4". 
Option: component whole, NA, instrument agency, member collection, cause effect, entity destination, content container, message topic, product producer, entity origin 
Text: {0} 
 Entity Pairs:  pulsar, remnant 
Answer:
 instrument agency: pulsar, remnant