Complex sentence: Modern literature, contemporary art, and news events of the twentieth century were recorded on a microfilm "Micro-File" for placement in Time Capsule I; the "Micro-File" has over ten million words and a thousand pictures and came with a small microscope for viewing.
Split into simpler sentences: Modern literature, contemporary art, and news events of the twentieth century on microfilm were all placed inside. This "Micro-File" has over ten million words and a thousand pictures and came with a small microscope for viewing.