8335
After the First World War it was sometimes prefixed by ' Light ' or ' Heavy ' ( LAA or HAA ) to classify a type of gun or unit .
 event: First World War
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 event: First World War