Given a sentence, fill out the missing word with a 'no' or a number (between zero and ten). You should write the numbers with english alphabet, like: four instead of 4.

Luminosity decreases by almost four orders of magnitude in approximately ____ million years.
five

Greed is covetousness, with covetousness being a foundation stone in all of the ____ deadly sins.
seven

Hibernian magic comes from ____ sources.

two