Safety Students should wear aprons and goggles when handling the phenolphthalein.
(Safety Students; should wear; aprons and goggles; T:when handling the phenolphthalein) Context(Safety Students should wear,List([0, 27))):(Safety Students; should wear aprons and goggles handling; the phenolphthalein)
Safety Students should wear,List([0, 27))
Safety Students Safety Students
should wear should wear aprons and goggles handling
aprons and goggles T:when handling the phenolphthalein
the phenolphthalein