"The specific object of the property observed. Examples are: biological agents, chemical substances, and radioactivity objects"@en . . "Water Observable Property Object"@en . _:B13ec41a400da7476454a33a0f5ffb5c8 . . . . _:B13ec41a400da7476454a33a0f5ffb5c8 . _:B13ec41a400da7476454a33a0f5ffb5c8 . _:B13ec41a400da7476454a33a0f5ffb5c8 .