| http://www.w3.org/ns/prov#value | - a light emitting diode having first and second leads extending therefrom; a power source having a first side and a second side, the second side being opposite the first side; a housing enclosing the leads of the light emitting diode and the power source, wherein the housing is made of translucent material; a switch being operable to close a circuit including the light source and the power source a
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