8631
This paper develops a new approach for extremely fast detection in domains where the distribution of positive and negative examples is highly skewed -LRB- e.g. face detection or database retrieval -RRB- .
 used for: approach, fast detection; conjunction: face detection, database retrieval
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: word3, word4". 
Option: conjunction, feature of, hyponym of, used for, part of, compare, evaluate for 
Text: {0} 
 Entity Pairs:  approach, fast detection; face detection, database retrieval 
Answer:
 used for: approach, fast detection; conjunction: face detection, database retrieval