Student A:Finding Your Roots with Henry Louis Gates Jr. is a documentary television series hosted by Dr. Henry Louis Gates Jr. that airs on PBS. In each episode, celebrities are presented with a "book of life" that is compiled with information researched by professional genealogists that allows them to view their ancestral histories, learn about familial connections, and discover secrets about their lineage. The series premiered on March 25, 2012. Season four concluded airing on December 19, 2017.

Who is the host of finding your roots?
Student B:OK... To answer this question, we should know that: Finding Your Roots with Henry Louis Gates Jr. is a documentary television series hosted by Dr. Henry Louis Gates Jr. that airs on PBS.
Dr. Henry Louis Gates Jr..

Student A:It is a gentle and intelligent breed whose combination of long, powerful legs, deep chest, flexible spine and slim build allows it to reach average race speeds exceeding 64 kilometres per hour (40 mph). The Greyhound can reach a full speed of 70 kilometres per hour (43 mph) within 30 metres (98 ft), or six strides from the boxes, traveling at almost 20 metres per second (66 ft / s) for the first 250 metres (820 ft) of a race.

Answer this question: how fast can a greyhound run in mph?
Student B:OK... To answer the above question, the relevant sentence is: The Greyhound can reach a full speed of 70 kilometres per hour (43 mph) within 30 metres (98 ft), or six strides from the boxes, traveling at almost 20 metres per second (66 ft / s) for the first 250 metres (820 ft) of a race.
43.

Student A:Passage: An election for the Speaker of the U.S. House of Representatives took place on January 3, 2017, during the opening day of the 115th United States Congress. The incumbent speaker, Paul Ryan, was re-elected. The election took place following the Republican Party's victory in the United States House of Representatives elections, 2016.

Question: Based on this passage, the name of the speaker of the house now?
Student B:OK... To answer the above question, the relevant sentence is: The incumbent speaker, Paul Ryan, was re-elected.
Paul Ryan.

Student A:Alicia Grafin (Countess) von Rittberg is a German actress best known for her role as Emma in the film Fury.

Answer this question based on the passage: who played the young german girl in fury?
Student B:
OK... The relevant information is: Alicia Grafin (Countess) von Rittberg is a German actress best known for her role as Emma in the film Fury.
Alicia Grafin ( Countess ) von Rittberg.