Question: What is the date of death of Basma Khalfaoui's husband?
Sentence (from "Basma Khalfaoui"): Basma Khalfaoui  (born El Kef 20 August 1970), is a Tunisian lawyer, political activist and long-time advocate for the women’s movement who rose to national prominence following the assassination of her husband Chokri Belaid in 2013.
Relevant evidence: Yes