Context: Comcast is sometimes described as a family business. Brian L. Roberts, Chairman, President, and CEO of Comcast, is son of co-founder Ralph Roberts. Roberts owns or controls just over 1% of all Comcast shares but all of the Class B supervoting shares, which gives him an "undilutable 33% voting power over the company". Legal expert Susan P. Crawford has said this gives him "effective control over its [Comcast's] every step". In 2010, he was one of the highest-paid executives in the United States, with total compensation of about $31 million.

Question: Who is the current head of Comcast?
Answer: Brian L. Roberts

Question: Who co-founded Comcast?
Answer: Ralph Roberts

Question: In what year was Roberts ranked as the country's highest-paid executive?
Answer: 2010

Question: What was Roberts' yearly salary in that year?
Answer: about $31 million

Question: What is Roberts power on the Comcast board?
Answer: "undilutable 33% voting power over the company"

Question: Who is Brian L. Robert's son?
Answer: Unanswerable

Question: What percentage of voting power does Susan P. Crawford have?
Answer: Unanswerable

Question: What is Susan P. Crawford's salary?
Answer: Unanswerable

Question: When did Roberts become the CEO of Comcast?
Answer: Unanswerable

Question: What type of supervoting shares does Robert not have?
Answer: Unanswerable