question: from april to june of this year, water hyacinths accounted for 80 percent of the 15,000 tons of floating rubbish collected by guangzhou city.
Capitalize this past sentence correctly.
A: From April to June of this year, water hyacinths accounted for 80 percent of the 15,000 tons of floating rubbish collected by Guangzhou city.

question: the year gives us reason to reflect on the fact that the europeans live longer than ever before and, at the same time, consider how to get the most of out of the extra years of life.
Capitalize this past sentence correctly.
A: The Year gives us reason to reflect on the fact that the Europeans live longer than ever before and, at the same time, consider how to get the most of out of the extra years of life.

question: this person knows two definitions for the word "rich."
Capitalize this past sentence correctly.
A: This person knows two definitions for the word "rich."