What are the keywords in the following sentence? the condo is recognizable by the impressive staircase leading up to the building .
building, lead, staircase

What are the keywords in the following sentence? fishing boats sit on land at the harbour .
boat, harbour, sit

What are the keywords in the following sentence? refugees hoping to cross into continent arrive at the shore
cross, refugee, shore

What are the keywords in the following sentence? cables and wires across a street
cable, street, wire