The devices that are packaged in this type of package.
(<=> (Available-Packages $Arg1 $Arg2)
(Devices-With-This-Package $Arg2 $Arg1))
(Inverse Available-Packages Devices-With-This-Package)
(=> (Devices-With-This-Package $X $Y) (Semiconductor $Y))
(<=> (Devices-With-This-Package $Arg1 $Arg2)
(Available-Packages $Arg2 $Arg1))
(=> (Devices-With-This-Package $X $Y) (Package-Type $X))