Does the sentence "No compounds of zinc in oxidation states other than +1 or +2 are known." provide a valid answer to the question "What are the only two oxidation states known for zinc compounds?"

A: yes

Does the sentence "By Eastern Han times, the central government monopolies were repealed in favor of production by commandery and county administrations, as well as private businessmen." provide a valid answer to the question "During what period did the governmental monopolies become privatized once again?"

A: yes

Does the sentence "Other standardized subsets of Unicode include the Multilingual European Subsets: MES-1 (Latin scripts only, 335 characters), MES-2 (Latin, Greek and Cyrillic 1062 characters) and MES-3A & MES-3B (two larger subsets, not shown here)." provide a valid answer to the question "MES-1 uses what scripts only?"

A: yes

Does the sentence "It consists of cells, and the cell walls are composed of micro-fibrils of cellulose (40% 50%) and hemicellulose (15% 25%) impregnated with lignin (15% 30%)." provide a valid answer to the question "What does wood consist of?"

A:
yes