Question: The Hashimiyya movement (a sub-sect of the Kaysanites Shia), led by the Abbasid family, overthrew the Umayyad caliphate. The Abbasids were members of the Hashim clan, rivals of the Umayyads, but the word "Hashimiyya" seems to refer specifically to Abu Hashim, a grandson of Ali and son of Muhammad ibn al-Hanafiyya. According to certain traditions, Abu Hashim died in 717 in Humeima in the house of Muhammad ibn Ali, the head of the Abbasid family, and before dying named Muhammad ibn Ali as his successor. This tradition allowed the Abbasids to rally the supporters of the failed revolt of Mukhtar, who had represented themselves as the supporters of Muhammad ibn al-Hanafiyya.
Is there an answer to this question: Who represented themselves as the supporters of Ali?

Answer: unanswerable

Question: The relationship between the Slavs and a tribe called the Veneti east of the River Vistula in the Roman period is uncertain. The name may refer both to Balts and Slavs.
Is there an answer to this question: An uncertain relationship was held between the Slavs and who?

Answer: the Veneti

Question: If conditions change, so that the pope judges it safe to make the appointment public, he may do so at any time. The cardinal in question then ranks in precedence with those raised to the cardinalate at the time of his in pectore appointment. If a pope dies before revealing the identity of an in pectore cardinal, the cardinalate expires.
Is there an answer to this question: Whose identity is not revealed if the pope dies?

Answer: unanswerable

Question: After India gained independence in 1947, a limited autonomy was conferred to New Delhi and was administered by a Chief Commissioner appointed by the Government of India. In 1956, Delhi was converted into a union territory and eventually the Chief Commissioner was replaced by a Lieutenant Governor. The Constitution (Sixty-ninth Amendment) Act, 1991 declared the Union Territory of Delhi to be formally known as National Capital Territory of Delhi. A system was introduced under which the elected Government was given wide powers, excluding law and order which remained with the Central Government. The actual enforcement of the legislation came in 1993.
Is there an answer to this question: In what year did India gain independence?

Answer:
1947