i [efr] had the privilege of attending these lectures which were extremely successful in meeting nash-williams' aim:

How would the previous sentence be correctly capitalized?
Answer: I [EFR] had the privilege of attending these lectures which were extremely successful in meeting Nash-Williams' aim:
superhero theme has always been very popular, evidenced by hundreds of movies and cartoons, taken around the world.

How would the previous sentence be correctly capitalized?
Answer: Superhero theme has always been very popular, evidenced by hundreds of movies and cartoons, taken around the world.
side walls: with large ventilation window, outside flap and curtains and a door that can be rolled to the side, zips are concealed.

How would the previous sentence be correctly capitalized?
Answer: Side walls: With large ventilation window, outside flap and curtains and a door that can be rolled to the side, zips are concealed.
the gfo xt is used for the removal of oil mists with a filtration degree of 99.9% with 0.3 µm and a capacity up to 3500m³/h .

How would the previous sentence be correctly capitalized?
Answer: The GFO XT is used for the removal of oil mists with a filtration degree of 99.9% with 0.3 µm and a capacity up to 3500m³/h .