Goal and options: How can you stop being flatulent.
output answer: Eat more Bananas, Potatoes, Legumes, cereals, wheat, artichokes, or Asparagus.

Goal and options: how to remove mildew
output answer: mix one ounce each of laundry detergent and trisodium phosphate with one quart laundry bleach and three quarts of water. Scrub the area with a soft brush and rinse with clean water

Goal and options: How to create a weed free flower bed.
output answer:
Put down many layers of plain old newspaper all around the flower bed, leaving flowers uncovered of course, then cover the newspaper with a few inches of your favorite mulch.