A male may touch a button.Logical formLearned from12 sentences. A button can be global.Logical formLearned from12 sentences. Buttons can be on a top.Logical formLearned from12 sentences. A center may pertain-to a button.Logical formLearned from12 sentences. A button can be at a bottom of a screen.Logical formLearned from12 sentences. A person may push some button.Logical formLearned from12 sentences. Buttons can be at a top.Logical formLearned from12 sentences. Groups can be constituted-of-or-filled-with buttons.Logical formLearned from12 sentences. A button can be graphical.Logical formLearned from12 sentences. Buttons can be nonfunctional.Logical formLearned from12 sentences. A purpose may pertain-to a button.Logical formLearned from12 sentences. A (stop button) may be pressed.Logical formLearned from12 sentences. An appearance may pertain-to a button.Logical formLearned from12 sentences. A button can be an one.Logical formLearned from12 sentences. A person may push a (send button).Logical formLearned from12 sentences.