Input: Article: However, some scholars contest the idea of a Proto-Euphratean language or one substrate language. It has been suggested by them and others, that the Sumerian language was originally that of the hunter and fisher peoples, who lived in the marshland and the Eastern Arabia littoral region, and were part of the Arabian bifacial culture. Reliable historical records begin much later; there are none in Sumer of any kind that have been dated before Enmebaragesi (c. 26th century BC). Professor Juris Zarins believes the Sumerians were settled along the coast of Eastern Arabia, today's Persian Gulf region, before it flooded at the end of the Ice Age.

Now answer this question: Some scholars contest that there was only one what?

Output: substrate language

Input: Article: In a United States Geological Survey (USGS) study, preliminary rupture models of the earthquake indicated displacement of up to 9 meters along a fault approximately 240 km long by 20 km deep. The earthquake generated deformations of the surface greater than 3 meters and increased the stress (and probability of occurrence of future events) at the northeastern and southwestern ends of the fault. On May 20, USGS seismologist Tom Parsons warned that there is "high risk" of a major M>7 aftershock over the next weeks or months.

Now answer this question: How deep is the fault?

Output: 20 km deep

Input: Article: Cardinal bishops (cardinals of the episcopal order) are among the most senior prelates of the Catholic Church. Though in modern times most cardinals are also bishops, the term "cardinal bishop" only refers to the cardinals who are titular bishops of one of the "suburbicarian" sees.

Now answer this question: What is a cardinal bishop?

Output:
cardinals of the episcopal order