Have a look at this new natural language search engine named Lexxe - here you have to enter some questions, not search terms. Lexxe provides you a short answer to your question and also clusters the search results. Here this technology is powered as search is a language oriented, meaning driven activity. As a result to your search, lexxe gives you short, exact answers directly from web pages. There are no human editors involved as the entire process is automatic. Answers are from web pages on the internet and from unstructured texts.