stem: math subject
choice: human sex
choice: earth world
choice: tire fill with air
choice: thumb tack sharp
choice: envelope mail letter
choice: eye head
choice: work money
choice: captain ship
choice: run marathon exhaustion
choice: goldfish fish
choice: heart love
choice: fly fly
choice: dog play with frisbee
choice: stick wood
choice: sate your hunger eat something
choice: do some exercise do cool-down
choice: drink urinate
choice: have sex kiss your partner
choice: fish goldfish