. . . . . . . . . . . . . . "O"@mul . . . . . . "oxygen"@en . . . . . . . . . . . . . "chemical element with symbol O and atomic number 8"@en . . . "O"@mul . . "O"@mul . . . . . . . . "chemical element, symbol O and atomic number 8"@en . . . . . . "oxygen"@en . . . . . . . . . . . . . . . . . . . . "oxygen"@en .