11923
They react aggressively with the halogens to form the alkali metal halides , which are white ionic crystalline compounds that are all soluble in water except lithium fluoride ( Li F ) .
 location: Li F
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Li F 
Answer:
 location: Li F