What are the keywords in the following sentence? person leads the pack into the first turn in a race
lead, pack, race, turn

What are the keywords in the following sentence? icon with smooth shadows and white map of the continents of the world
continent, icon, map, shadow, world

What are the keywords in the following sentence? a hiker leading a llama into a subalpine mountain valley in protected site
lead, site, valley

What are the keywords in the following sentence? A tall tower like structure with a clock on it.
clock, structure, tower