Assertion: copper containing tourmaline | /r/AtLocation | nigeria
Facets:
Source sentences:
text: In the late 1990s, copper-containing tourmaline was found in Nigeria.
text: In the late 90s, copper-containing tourmaline was found in Nigeria.
text: In the late 90s, copper-containing tourmaline was found in Nigeria.
text: In the late 90s, copper-containing tourmaline was found in Nigeria.
text: In the late 90s, copper-containing tourmaline was found in Nigeria.
text: In the late 90s, copper-containing tourmaline was found in Nigeria.
text: In the late 90s, copper-containing tourmaline was found in Nigeria.
text: In the late 90s, copper-containing tourmaline was found in Nigeria.
text: In the late 90s, copper-containing tourmaline was found in Nigeria.
text: In the late 90s, copper-containing tourmaline was found in Nigeria.
text: In the late 90s, copper-containing tourmaline was found in Nigeria.
text: In the late 90s, copper-containing tourmaline was found in Nigeria.
text: In the late 90s, copper-containing tourmaline was found in Nigeria.
text: In the late 90s, copper-containing tourmaline was found in Nigeria.
text: In the late 90s, copper-containing tourmaline was found in Nigeria.