Assertion: algae | /r/IsA | plant
Facets:
value: formerly
type: TEMPORAL
Source sentences:
text: Although they were once classified as plants, they do not have roots, stems, or leaves, and are now viewed as protists.
text: Formerly, algae were classified as plants but this was incorrect as algae lack parts of true plants: leaves, stems, roots, xylem, and phloem (though some plants, such as mosses, also lack all of these parts).