input question: strainer

output answer: can be used to rinse rocks

input question: To make your central heat and air unit work properly,

output answer: change the air filter at the beginning of summer and winter.

input question: How do you french braid hair?

output answer:
Take some hair at the top and separate it into three equal sections left, middle and right. Take the left section, cross it over the middle one and combine it with the right section. Take right section, cross it over the middle and combine it with the left section. And again, take the left section and cross it over the middle one, combining it with the right section...and you've mastered the technique! Add more hair from the right, cross it over the middle. Add more hair from the left, cross it over the middle, and continue this pattern all the way down. Secure with a hair tie at the end.