question: in his old age he interested himself in formulas designed to help in the just and efficient collection of income tax.
Capitalize this past sentence correctly.
A: In his old age he interested himself in formulas designed to help in the just and efficient collection of income tax.

question: funny videos online and free porn in the shower
Capitalize this past sentence correctly.
A: Funny videos online and free porn in the shower

question: a manufacturer of dmx512 high-power led wall washer ip65 led wall washer light,lww5 at zhongshan karnar lighting & electron factory.
Capitalize this past sentence correctly.
A: A manufacturer of dmx512 high-power led wall washer ip65 led wall washer light,lww5 at zhongshan karnar lighting & electron factory.