1) Explicandum 2) Statement 1) Explicandum 
An explanandum (a Latin term) is a phenomenon that needs to be explained and its explanans is the explanation of that phenomenon. For example, one person may pose an explanandum by asking `Why is there smoke?`, and another may provide an explanans by responding `Because there is a fire`. In this example, `smoke` is the explanandum, and `fir...