Please capitalize where necessary: just days ago, something catastrophic happened to the football world, or at least to spain.
A: Just days ago, something catastrophic happened to the football world, or at least to Spain.
Q: the result was astonishing: with an increase in kerb weight of just 25 kg, the engine output was increased by 35 bhp (from 150 to 185 bhp).

A: The result was astonishing: with an increase in kerb weight of just 25 kg, the engine output was increased by 35 bhp (from 150 to 185 bhp).
Q: morning temperatures will be around 9 °c. during the day they will reach a maximum of 15 °c. low temperatures at night will be around 8°c. we have weak southerly winds.
A: Morning temperatures will be around 9 °C. During the day they will reach a maximum of 15 °C. Low temperatures at night will be around 8°C. We have weak southerly winds.
Problem: in this context, the cold vira do not separate themselves from the majority of other kinds of vira.
Can you repeat this sentence, but capitalize it?
Answer: In this context, the cold vira do not separate themselves from the majority of other kinds of vira.
Text: linuxtag is the largest and most important exhibition and conference in europe, which covers free software and gnu/linux. the motto is where .com meets .org. linuxtag combines both a community event as well as a professional exhibition with large amounts of business and a high quality gratis conference program.

Correct capitalization: LinuxTag is the largest and most important exhibition and conference in Europe, which covers Free Software and GNU/Linux. The motto is Where .COM meets .ORG. LinuxTag combines both a community event as well as a professional exhibition with large amounts of business and a high quality gratis conference program.
Problem: software for writing music free create sheet music with wysiwyg editor, listen to your score with computer playback.
Can you repeat this sentence, but capitalize it?
Answer:
Software for writing music free create sheet music with WYSIWYG editor, listen to your score with computer playback.