Assertion: heavy metal | /r/CapableOf | use lead
Facets:
value: in the latter case
type: TEMPORAL
Source sentences:
text: In nuclear science, nuclei of heavy metals such as chromium, iron, or zinc are sometimes fired at other heavy metal targets to produce superheavy elements; heavy metals are also employed as spallation targets for the production of neutrons or radioisotopes such as astatine (using lead, bismuth, thorium, or uranium in the latter case).