Assertion: protactinium's isotope | /r/HasProperty | discovered by german physicists lise meitner
Facets:
value: in 1918
type: TEMPORAL
Source sentences:
text: In 1918, another isotope of element number 91 was discovered by German physicists Lise Meitner (1878-1968) and Otto Hahn (1879-1968).
text: In 1918, another isotope of element number 91 was discovered by German physicists Lise Meitner (1878-1968) and Otto Hahn (1879-1968).
text: In 1918, another isotope of element number 91 was discovered by German physicists Lise Meitner (1878-1968) and Otto Hahn (1879-1968).