on  [everest < is < a < mountain]
say [
      [ok < everest < is < a < mountain]
      [i < will < remember < that]
    ]
    
on  [everest < is < a < mountain]
say [
      [yes < i < know]
    ]
    
on  [what < is < everest]
say [everest < is < a < mountain]

on  [is < everest < a < mountain]
say [yes]

on  [is < everest < a < goat]
say [ [no] or [i < don't < know] ]