23640
 In Texas , Lost Maples State Natural Area a limestone canyon near Vanderpool , about a two-hour drive northwest of San Antonio is renowned for its beautiful bigtooth maples , as well as its black walnuts , elms and sycamores , all protected by the canyon walls . 
 location contains: Texas, San Antonio
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: Texas, San Antonio