Problem: Does "However, in 2011 a weak La Nina effect caused a drought by cooling the surface of the sea around Tuvalu." answer the question "What did a drought in 2011 cause on Funafuti?"

A: no

Problem: Does "Dioxins are recognized as a persistent environmental pollutant, regulated internationally by the Stockholm Convention on Persistent Organic Pollutants." answer the question "What agency internationally regulates dioxins?"

A: yes

Problem: Does "The Mogadishu-based Somali National Television is the principal national public service broadcaster." answer the question "When was Somali Nation Television officially re-launched?"

A:
no