question: during the early middle ages they used to have land divided in two parts.
Capitalize this past sentence correctly.
A: During the early Middle Ages they used to have land divided in two parts.

question: the net benefit of the projects is just the sum of the present value of the benefits less the present value of the costs.
Capitalize this past sentence correctly.
A: The net benefit of the projects is just the sum of the present value of the benefits less the present value of the costs.

question: a manufacturer of 108 pcs led led t10 at guangdong china.
Capitalize this past sentence correctly.
A: A manufacturer of 108 pcs led Led T10 at GuangDong China.