Given a text, write a compressed version of it in a single sentence.

[Q]: There are two major types of sewing machines used in garment assembly: the lockstitch and the chain-stitch machine. Each type feeds in separate threads above and below the fabric, and these two threads must be connected in some fashion to form a stitch.
[A]: The two major types of sewing machines used in garment assembly are the lockstitch and the chain-stitch. Each feed threads above and below the fabric. These threads connect to form a stitch.


[Q]: "Former Little Sister Amy, now 18-years old, is a testament to the Big Sisters program."
[A]: 18 year old Amy is a testament to the Big Sisters Program


[Q]: Audubon educates the public. Teaching Americans -- particularly young people -- how to become better stewards of our environment is one of the best investments that you and I can make for wildlife.
[A]:
Audubon educates the public, teaching Americans how to become better stewards of our environment is one of the best investments you and I can make


