What are the keywords in the following sentence? construction of the tunnel looking west
construction, look, tunnel

What are the keywords in the following sentence? sun breaking through the fog
break, fog, sun

What are the keywords in the following sentence? strange forms of sea life in a coral reef with tropical fishes
fish, life, reef

What are the keywords in the following sentence? tourists look at a mural painting as they visit buddhist place of worship .
tourist, visit, worship