A (campaign button) may pertain-to a US-president.Logical formLearned from13 sentences. Buttons may be clicked.Logical formLearned from13 sentences. Buttons can be active.Logical formLearned from13 sentences. A person may buy some buttons.Logical formLearned from13 sentences. A button can be on a site.Logical formLearned from13 sentences. Buttons can be built-in.Logical formLearned from13 sentences. A user may click on a (submit button).Logical formLearned from13 sentences. A (refresh button) may pertain-to a browser.Logical formLearned from13 sentences. A person may click a (submit button).Logical formLearned from13 sentences. A person may use a (search button).Logical formLearned from13 sentences. A male may undo buttons of a shirt.Logical formLearned from13 sentences. Buttons can be polished.Logical formLearned from13 sentences. A button can be as governor.Logical formLearned from13 sentences. A button can be digital.Logical formLearned from12 sentences. A user may click a (mouse button).Logical formLearned from12 sentences.