Given a text, write a compressed version of it in a single sentence.

Q: In Docket R90-1, the variability or elasticity of evaluated rural route costs with respect to volume was estimated at 44 percent by the Postal Service.

A: The elasticity of rural route costs with respect to volume was estimated at 44 percent.
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Q: As an example of all four phenomena, I refer you now to the complaint of K., who is chagrined by the errant behavior of the U-Haul company.

A: K., chagrined by the U'Haul company's errant behavior, is an example of all four phenomena.
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Q: Note, too, Johann Hummel's curious study in perspective, a painting of the granite bowl which can still be seen in Berlin's Lustgarten, in front of the Altes Museum.

A:
Note Johann Hummel's study in perspective which can still be seen in Berlin's Lustgarten, in front of the Altes Museum.
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