A glockenspiel is a musical instrument that is like a xylophone. It has a series of metal bars and is played with two hammers.

Sterling silver is not pure silver. Because pure silver is too soft to be used in most tableware it is mixed with copper in the proportion of 92.5 percent silver to 7.5 percent copper.

Octopus and squid are thought to be the most intelligent of all invertebrates.

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