A (business model) can be for (ad listings).Logical formLearned from4 sentences. (Search engine listings) can be high.Logical formLearned from4 sentences. A listing may begin.Logical formLearned from4 sentences. Engines may create listings.Logical formLearned from4 sentences. A person may copy a listing.Logical formLearned from4 sentences. A listing may pertain-to a ci.Logical formLearned from4 sentences. A piece may check_out a listing.Logical formLearned from4 sentences. A (work experience) may undergo a listing.Logical formLearned from4 sentences. A listing can be dead.Logical formLearned from4 sentences. A (web listing) may pertain-to a government-agency.Logical formLearned from4 sentences. Searches may undergo listings.Logical formLearned from4 sentences. A listing can be by date.Logical formLearned from4 sentences. An error can be in a listing.Logical formLearned from4 sentences. Fiction may undergo a listing.Logical formLearned from4 sentences. A (home listing) may pertain-to a person.Logical formLearned from4 sentences.