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pressure sewer pipes are manufactured to astm d3754 also in 20 and 40 foot lengths and in standard pressure classes from 50 psi up to 250 psi .
 component whole: sewer, pipes
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:  sewer, pipes 
Answer:
 component whole: sewer, pipes