What are the keywords in the following sentence? the program provided a home for returning species .
home, provide, specie

What are the keywords in the following sentence? smoke and fire from an explosion of attacks rise over governmental jurisdiction on tuesday .
attack, rise, smoke, tuesday

What are the keywords in the following sentence? A green locomotive with smoke coming from its stack
come, locomotive, smoke

What are the keywords in the following sentence? fly aircraft around the world .
aircraft, fly, world