diff --git a/e1.pl b/e1.pl
new file mode 100644
index 0000000..862396f
--- /dev/null
+++ b/e1.pl
@@ -0,0 +1,7 @@
+range(End, End, []) .
+range(Start, End, [Start| Acc]) :- Next is Start + 1, range(Next, End, Acc).
+
+divisors_3_5([], []).
+divisors_3_5([X|Xs], [X|Ys]) :- 0 is X rem 3, divisors_3_5(Xs, Ys).
+divisors_3_5([X|Xs], [X|Ys]) :- 0 is X rem 5, divisors_3_5(Xs, Ys).
+divisors_3_5([X|Xs], Ys]) :- divisors_3_5(Xs, Ys).
diff --git a/prolog.txt b/prolog.txt
new file mode 100644
index 0000000..f1f0f31
--- /dev/null
+++ b/prolog.txt
@@ -0,0 +1,3 @@
+swipl
+[file].
+fn.