Information: - Google is an American multinational technology company specializing in Internet-related services and products that include online advertising technologies, search, cloud computing, software, and hardware. - Blackle is a website powered by Google Custom Search and created by Heap Media , which aims to save energy by displaying a black background and using grayish - white font color for search results . Blackle claims having saved over 4 MWh of electrical energy up to November 2013 , a claim currently under dispute . For comparison , the average USA household consumes 11 MWh of electrical energy per year . - Google Search, commonly referred to as Google Web Search or simply Google, is a web search engine developed by Google. It is the most-used search engine on the World Wide Web, handling more than three billion searches each day. it is the most used search engine in the US with 64.0% market share. - Google Custom Search (formerly known as Google Co-op) is a platform provided by Google that allows web developers to feature specialized information in web searches, refine and categorize queries and create customized search engines, based on Google Search. The service allows users to narrow the 11.5 billion indexed webpages down to a topical group of pages relevant to the creator's needs. Google launched the service on October 23, 2006 Given the information, choose the subject and object entities that have the relation of 'instance of'.
Answer:
blackle , web search engine