Problem: Does "The Kalahari Desert, an arid region shared with South Africa and Botswana, is one of Namibia's well-known geographical features." answer the question "What Desert is shared between South Africa and Botswana?"

A: yes

Problem: Does "Augustine's City of God is an influential work of this period that attacked the thesis, held by many Christian Romans, that the Christian view could be realized on Earth." answer the question "Who heavily influenced the early Christian philosophy of Augustine of Hippo?"

A: no

Problem: Does "Ultra-high vacuum is used in the study of atomically clean substrates, as only a very good vacuum preserves atomic-scale clean surfaces for a reasonably long time (on the order of minutes to days)." answer the question "What was the object to use first in widespread manner process of vacuum?"

A:
no