diff --git a/PR03/prax03.pl b/PR03/prax03.pl
new file mode 100755
index 0000000..83d6f57
--- /dev/null
+++ b/PR03/prax03.pl
@@ -0,0 +1,63 @@
+#!/usr/bin/swipl
+married(marta, mart).
+married(liisa, joosep).
+married(anne, vello).
+
+mother(evelin,anne).
+mother(mikk, anne).
+mother(juku, anne).
+mother(anne, liisa).
+mother(mart, liisa).
+
+female(marta).
+female(anne).
+female(evelin).
+female(liisa).
+
+male(vello).
+male(mikk).
+male(juku).
+male(mart).
+
+father(Laps, Isa):-
+    mother(Laps, Ema),
+    married(Ema, Isa),
+    male(Isa).
+
+brother(Laps, Vend):-
+    mother(Laps, Ema),
+    mother(Vend, Ema),
+    Laps \= Vend,
+    male(Vend).
+
+sister(Laps, Ode):-
+    mother(Laps, Ema),
+    mother(Ode, Ema),
+    Laps \= Ode,
+    female(Ode).
+
+uncle(Laps, Uncle):-
+    (mother(Laps, Vanem); father(Laps, Vanem)),
+    brother(Vanem, Uncle).
+
+aunt(Laps, Aunt):-
+    (mother(Laps, Vanem); father(Laps, Vanem)),
+    sister(Vanem, Aunt).
+
+grandmother(Laps, GM):-
+    (mother(Laps, Vanem); father(Laps, Vanem)),
+    mother(Vanem, GM).
+
+grandfather(Laps, GF):-
+    (mother(Laps, Vanem); father(Laps, Vanem)),
+    father(Vanem, GF).
+
+ancestor(C, G):- mother(C, G).
+ancestor(C, F):- father(C, F).
+ancestor(C, G):-
+    (mother(C, Anc);father(C, Anc)),
+    ancestor(Anc, G).
+
+
+male_ancestor(C, A):- ancestor(C, A), male(A).
+female_ancestor(C, A):- ancestor(C, A), female(A).