Assertion: protactinium | /r/HasProperty | adopted at this time
Facets:
value: john a. cranston
type: TEMPORAL
Source sentences:
text: and John A. Cranston; the name protoactinium was adopted at this time.
text: and John A. Cranston; the name protoactinium was adopted at this time.
text: Protactinium-231 was first identified in 1918 by Otto Hahn and Lisa Meitner and independently by Frederick Soddy and John A. Cranston; the name protoactinium was adopted at this time.