stem: calculator do math
choice: sell your new book money
choice: strike match flame
choice: dog play with frisbee
choice: person kill
choice: boredom play game
choice: kayak boat
choice: bathe dry off
choice: dove peace
choice: sword kill
choice: wood burn
choice: see exhibit learn
choice: metal shiny
choice: earth universe
choice: kill sword
choice: enjoy film buy ticket
choice: playground park
choice: cup plastic
choice: human sex
choice: war opposite of peace