Matches in DBpedia 2014 for { ?s ?p Lanthanum is a chemical element with the symbol La and atomic number 57.Lanthanum is a silvery white metallic element and is the first element of the lanthanide series (or, on occasion, considered the first element of the 6th-period transition metals). It is found in some rare-earth minerals, usually in combination with cerium and other rare earth elements. Lanthanum is a malleable, ductile, and soft metal that oxidizes rapidly when exposed to air.. }
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- Lanthanum comment "Lanthanum is a chemical element with the symbol La and atomic number 57.Lanthanum is a silvery white metallic element and is the first element of the lanthanide series (or, on occasion, considered the first element of the 6th-period transition metals). It is found in some rare-earth minerals, usually in combination with cerium and other rare earth elements. Lanthanum is a malleable, ductile, and soft metal that oxidizes rapidly when exposed to air.".