1971
bed sores ( also known as : pressure sores , decubitus ulcers or pressure ulcers ) are caused by pressure , which cuts off blood flow to parts of the body .
 cause effect: bed sores, pressure
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:  bed sores, pressure 
Answer:
 cause effect: bed sores, pressure