Question: What grandson of  Gerard Adriaan Heineken did Cornelis van Hout plan the kidnapping of?
Sentence (from "Freddy Heineken"): Alfred Henry "Freddy" Heineken (4 November 1923 – 3 January 2002) was a Dutch businessman for Heineken International, the brewing company bought in 1864 by his grandfather Gerard Adriaan Heineken in Amsterdam.
Relevant evidence: Yes