牛

牛 = 𠂉 + 十 : A bull has been locked to a big cross in the outhouse's kitchen, and Nefertiti has the key. She promises to free the bull if he pledges allegiance to her leadership.

十 = 一 + 丨 : Mnemonic symbol: a holy cross. Sherlock Holmes (sh-) is investigating a very strange thing he found in the kitchen of the space station (-2): A big pyramid made of ten (十) crosses (十), which are in turn made out of flutes (一) and dinosaur bones (丨).

𠂉 = 丿 + 一 : Mnemonic symbol: 𠂉 looks like a key.

Imagine a banana you can't open without putting a key into each of the holes of a flute which is painted on its peel.