Definition: In this task, you're given a short article. Your job is to classify the article based on its category. Use the following classification labels, 0. World, 1. Sports, 2. Business, 3. Science or Technical. Label the text "0" if it contains information related to world. Label the text "1" if it contains information related to sports. Label the text "2" if it contains information related business. Label the text "3" if it contains science or technical related information. 
Input: Wal-Mart Backs Sept. Sales Targets Wal-Mart Stores Inc. (WMT.N: Quote, Profile, Research) , the world #39;s largest retailer, said on Saturday it still expects a 2 percent to 4 percent increase in September US sales at stores 
