2291
in south africa , which has one of the best police to public ratios on the continent , the share of murders that result in a conviction is about 18 % , compared to 56 % in the us and 61 % in the uk .
 cause effect: murders, conviction
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:
 cause effect: murders, conviction