Question: Edward Caraballo was incarcerated in the detention facility that is the largest in Pakistan east of what city?
Sentence (from "Pul-e-Charkhi prison"): Between April 1978 and the Soviet invasion of December 1979, the communist People's Democratic Party of Afghanistan (PDPA) under Nur Muhammad Taraki, executed around 27,000 political prisoners at Pul-i-Charkhi.
Relevant evidence: No