What are the keywords in the following sentence? italian region and rolling hills on a trip
hill, region, roll

What are the keywords in the following sentence? lawns by tower with people tourists sitting relaxing
lawn, relax, sit, tourist, tower

What are the keywords in the following sentence? A large, ancient looking clock tower rises above a neighboring structure.
look, structure, tower

What are the keywords in the following sentence? oak trees on green meadow at a spring day
meadow, oak, tree