the electro-galvanised steel tube poles are particularly suitable for season and long-term sites, offer the best possible safety and are available in the following thicknesses:

How would the previous sentence be correctly capitalized?
Answer: The electro-galvanised steel tube poles are particularly suitable for season and long-term sites, offer the best possible safety and are available in the following thicknesses:
in fact smale attacked the generalised poincaré conjecture using morse theory.

How would the previous sentence be correctly capitalized?
Answer: In fact Smale attacked the generalised Poincaré conjecture using Morse theory.
once the encodings were set in place, the complementary dna sequences for the vertices and the sequences for the edges were synthesized.

How would the previous sentence be correctly capitalized?
Answer: Once the encodings were set in place, the complementary DNA sequences for the vertices and the sequences for the edges were synthesized.
the european council welcomed the increasing engagement by african countries in solving crises and armed conflicts, as seen recently in a number of cases.

How would the previous sentence be correctly capitalized?
Answer: The European Council welcomed the increasing engagement by African countries in solving crises and armed conflicts, as seen recently in a number of cases.