Darmstadtium the JINR showed signs of Ds being produced from Pu and S. Each team proposed its own name for element 110: the American team proposed "hahnium" after Otto Hahn in an attempt to resolve the situation on element 105 (which they had long been suggesting this name for), the Russian team proposed "becquerelium" after Henri Becquerel, and the German team proposed "darmstadtium" after Darmstadt, the location of their institute. The IUPAC/IUPAP Joint Working Party (JWP) recognised the GSI team as discoverers in their 2001 report, giving them the right to suggest a name for the element. Using Mendeleev's nomenclature for
What Was Missing inspired by an incident that Sugar had experienced with a former roommate. Although the two often fought, Sugar desperately wanted them to be friends despite not particularly liking her. Sugar transferred this situation onto Marceline, writing the song so that Marceline—while having issues with Princess Bubblegum—wanted to become her friend. "My Best Friends in the World" was written by Sugar as a celebration of the friendship she shared with her coworkers, especially her storyboarding partner, Muto. Ward later admitted on the commentary track for "What Was Missing" that, while he was editing the animatic for the episode, he started to