When Anna Komnene , the first child of Alexios I and Irene Doukaina was born , she was promptly betrothed to Constantine , which confirmed his position as heir . Kazhdan , pg .
Head entity: anna komnene Q179284 1 2
Tail entity: irene doukaina Q232714 11 12
Relation (head \u2192 tail): P40
Inverse relation (tail \u2192 head): P25