Utilize the input text as a context reference, choose the right relationship between 'Baidu' and 'Internet' from the options.
Options: stock exchange, business division, industry, brand

Chinese Internet search engine Baidu (NASDAQ:BIDU) was downgraded early Wednesday, while drugmakers Valeant Pharmaceuticals International (NYSE:VRX) and Shire (NASDAQ:SHPG) also saw analyst action.
industry