Question: Who is the father of the composer of song Livkot Lekha?
Sentence (from "Aviv Geffen"): Aviv Geffen (born May 10, 1973) is an Israeli rock musician, singer, songwriter, producer, keyboardist, and guitarist and the son of writer and poet Yehonatan Geffen and Nurit Makover, brother of actress Shira Geffen, and an alumnus of Rimon School of Jazz and Contemporary Music.
Relevant evidence: Yes