A key retainer for retaining a draft key in the key slot of a railway car yoke is mounted on the outside of the sill of a railway car. The method includes hosting an organization’s website including a plurality of hyperlinked web pages, displaying one or more virtual plaque web pages honoring donors, providing one or more donation and payment option web pages, the options selectable by a donor, and modifying or otherwise updating virtual plaques on the virtual plaque web pages when a donation is made. The communication function controls the reception of the usage conditions and the content information, both transmitted from the PDA. The first management area controller detects the first picture displayed in the first management area when an operator has specified the first picture. The olefin resin contains an ethylene polymer and a propylene polymer, for example. The highly crystalline mixed oxides obtained by means of the process according to the invention are used as starting material for high-performance dielectric, especially multi-layer capacitors, and for high performance dielectrics.