Assertion: neptunium's life | /r/HasProperty | over two million years
Facets:
value: through alpha decay
type: TEMPORAL
value: into thallium
type: TEMPORAL
value: into bismuth
type: LOCATION
Source sentences:
text: The half-life of its most stable isotope, 237Np, is over two million years and decays into thallium and bismuth; primarily through alpha decay.