Please capitalize where necessary: but social media are an excellent complement a place where our customers can quickly and directly interact with what we post," says sten stromgren, marketing manager at engcon.
A: But social media are an excellent complement a place where our customers can quickly and directly interact with what we post," says Sten Stromgren, Marketing Manager at engcon.

Q: and for those who have had mystical experience of the divine presence behind the mind, of divine wisdom behind the cosmos, it is the only acceptable doctrine.

A: And for those who have had mystical experience of the divine presence behind the mind, of divine wisdom behind the cosmos, it is the only acceptable doctrine.

Q: if someone has not chosen a place to rest, the record is quite useful as a material for reflection.
A: If someone has not chosen a place to rest, the record is quite useful as a material for reflection.

Problem: 6.4.2 in special circumstances we may have to change your seat, even if it has been reserved in advance.
Can you repeat this sentence, but capitalize it?
Answer: 6.4.2 In special circumstances we may have to change your seat, even if it has been reserved in advance.

Text: travel class upgrades are available on scheduled finnair flights (ay-code on the ticket and the flight is operated by finnair or flybe).

Correct capitalization: Travel class upgrades are available on scheduled Finnair flights (AY-code on the ticket and the flight is operated by Finnair or Flybe).

Q: many spheres have been found in groups and appear to portray an astronomic position, in rows, waves and triangular patterns, with an alignment towards the magnetic north.
A:
Many spheres have been found in groups and appear to portray an astronomic position, in rows, waves and triangular patterns, with an alignment towards the magnetic north.