stem: student read book
choice: lens camera
choice: street drive on
choice: rain flood
choice: person kill
choice: attend rock concert purchase ticket
choice: lion hunt zebra
choice: dove peace
choice: earth world
choice: dog bone
choice: sit down rest
choice: hunt zebra lion
choice: do some exercise do cool-down
choice: rock hard
choice: too long hair have haircut
choice: take stand testify
choice: piece whole
choice: stick wood
choice: person two ear
choice: goldfish fish