TL;DR bet on which word will be the most likely to be the first word in a valid haiku.

Background here:

The first word will be chosen from this market with a weighted random number based on their market weights at the time of market resolution.

Edit: The first word will be chosen from the top 20 scoring words in this market, with a weighted random number based on their market weights at the time of market resolution.

All markets will resolve when either 1) a valid haiku has been created or 2) the process has failed to produce a valid haiku, in which case the “failure” options in each market will pay out.

I will not trade in these markets. I reserve the right to modify the text of the markets to avoid unintended consequences/gaming, preserving as much as possible the original intent and mechanism.