Complex sentence: Vinegar is a liquid substance consisting mainly of acetic acid (CH 3 CO 2 H) and water, the acetic acid being produced through the fermentation of ethanol by acetic acid bacteria.
Split into simpler sentences: Vinegar is a liquid consisting mainly of acetic acid (CH 3 CO 2 H) and water. The acetic acid is produced by the fermentation of ethanol by acetic acid bacteria.