Problem: Does "However, the written script was and remains adapted to the literary form, which is based on classical Chinese, not the vernacular and spoken form." answer the question "Written Hokkein is based on what?"

A: yes

Problem: Does "Rayon is derived from a natural cellulose and cannot be considered synthetic, but requires extensive processing in a manufacturing process, and led the less expensive replacement of more naturally derived materials." answer the question "What was manufactured completely from petrochemicals?"

A: no

Problem: Does "In 2007, German Federal Environment Minister Sigmar Gabriel cited estimates that up to 30% of all species will be extinct by 2050." answer the question "What year did Gabriel estimate 30% of of all species will be extinct by?"

A:
yes