Initial data commit

Task/Inheritance-Single/Fortran/inheritance-single.f

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+module anim
+
+  type animal
+  end type animal
+
+  type, extends(animal) :: dog
+  end type dog
+
+  type, extends(animal) :: cat
+  end type cat
+
+  type, extends(dog) :: lab
+  end type lab
+
+  type, extends(dog) :: collie
+  end type collie
+
+end module anim