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 But in contrast to the rest of the Arabian Peninsula , which is mostly hot , dry and barren , Yemen is practically a cool green paradise , with crisp mountain air , enormous acacia trees , pristine coral reefs and verdant fields bursting with khat , a psychoactive plant that induces mild euphoria . 
 location contains: Arabian Peninsula, Yemen
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: nationality, country capital, place of death, children, location contains, place of birth, place lived, administrative division of country, country of administrative divisions, company, neighborhood of, company founders 
Text: {0} 
Answer:
 location contains: Arabian Peninsula, Yemen