Please capitalize where necessary: new advertising screens can read the gender and age of passengers walking by.
A: New advertising screens can read the gender and age of passengers walking by.
Q: click to enlarge picture used, colour may vary.

A: Click to enlarge picture Used, colour may vary.
Q: the story is based on sorle's saga as well as bits of information from the prose (snorri's) edda about the antagonism between loki and heimdall and freya's unhappy marriage with od.
A: The story is based on Sorle's Saga as well as bits of information from The Prose (Snorri's) Edda about the antagonism between Loki and Heimdall and Freya's unhappy marriage with Od.
Problem: it is time to stop poisoning our future with our doubt.
Can you repeat this sentence, but capitalize it?
Answer: It is time to stop poisoning our future with our doubt.
Text: a person playing a machine à sous machine can play if he inserts coins, cash, or a bar-coded paper ticket into a designated machine à sous on the machine.

Correct capitalization: A person playing a machine à sous machine can play if he inserts coins, cash, or a bar-coded paper ticket into a designated machine à sous on the machine.
Problem: check rates and availability for sunshine house. then proceed to booking.
Can you repeat this sentence, but capitalize it?
Answer:
Check rates and availability for Sunshine House. Then proceed to booking.