1189
a paper co-authored by jrc staff entitled `` plutonium-based superconductivity with a transition temperature above 18k '' was published on 21 november in nature magazine .
 product producer: paper, staff
Given a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "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} 
Answer:
 product producer: paper, staff