What are the keywords in the following sentence? A classroom with a chalkboard, desk, and books.
chalkboard, classroom, desk

What are the keywords in the following sentence? professional athlete won bronze in the heptathlon
athlete, bronze, heptathlon

What are the keywords in the following sentence? detail of sculptures in the facade of a building
building, detail, facade

What are the keywords in the following sentence? a creek flowing through a forest of dead trees .
flow, forest, tree