haskell - Determining Types in Haskell

Question

Let's say I'm creating a data type in haskell, and this data type accepts multiple constructors. Is there an easy way to determine later in my code which one it was created as?

EDIT:

Example, I'm using the dataType

data LogicValue =  CloseAnd (Int, Int) (Int, Int)
            | CloseXor (Int, Int) (Int, Int)
            | FarAnd LogicValue LogicValue 
            | FarXor LogicValue LogicValue

Is there an easy way to determine if something is a CloseAnd for instance?