Please capitalize where necessary: do you know what he said? well, what he said is all true - he spoke of himself and the rest of the invaders.
A: Do you know what he said? Well, what he said is all true - he spoke of himself and the rest of the invaders.

Q: 25 and they, when they had testified and preached the word of the lord, returned to jerusalem, and preached the gospel in many villages of the samaritans.

A: 25 And they, when they had testified and preached the word of the Lord, returned to Jerusalem, and preached the gospel in many villages of the Samaritans.

Q: average rating of our former students, when asked about their overall stay at a school in rome
A: Average rating of our former students, when asked about their overall stay at a school in Rome

Problem: a product can be registered in all the categories relevant for that specific product for no further costs.
Can you repeat this sentence, but capitalize it?
Answer: A product can be registered in all the categories relevant for that specific product for no further costs.

Text: this product was added to our catalog on sunday 10 june, 2007.

Correct capitalization: This product was added to our catalog on Sunday 10 June, 2007.

Text: small plant height of only about 10 cm rustic-looking old-fashioned, but 'paletta' appeared only in 1997

Correct capitalization:
Small plant height of only about 10 cm rustic-looking old-fashioned, but 'Paletta' appeared only in 1997