Title: Party leaders of the United States House of Representatives.
Question: What is a good technique to foster party harmony?

Title: Queen Victoria.
Question: What position did Conroy try and fail to get Victoria to appoint him to during her illness and later? 

Title: Uranium.
Question: What common complex is formed by the UO2+ 2 ion with organic chelating agents?

Title: Macintosh.
Question:
In 2009, how many Macs sold were laptops?