2425
in the most common form of such an attack , called ischemic stroke , the blockage comes from a blood clot that develops in one of the brain 's blood vessels .
 cause effect: blockage, clot
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: blockage, clot