Analyze the relationship between 'Baidu' and 'Internet' within the context of the input sentence.
Options: publisher, manufacturer, industry, subsidiary

US-listed Chinese companies like E-commerce giant Alibaba and Internet search company Baidu (Xetra: A0F5DE - news ) felt the effects of the upheaval in Chinese markets, swooning when Shanghai tumbled and rallying when equities in the home market went back up.
industry