I use the chatgpt35-turbo "system" field for instructions, then put the event info into the "user" field
--- PROMPT ---
You are given a meetup event description. For each of the following attributes, return the percent likelihood that the event involves has that attribute, in CSV format:
--- PROMPT ---
You are given a meetup event description. For each of the following attributes, return the percent likelihood that the event involves has that attribute, in CSV format:
Attributes:
- Technology
- Pets
- Exercise
Example:
Technology,0.3
Pets,0.1
Exercise,1.0