What are the keywords in the following sentence? the ferry boat left port from island
island, leave, port

What are the keywords in the following sentence? knitting pattern with the face of a cat
cat, knit, pattern

What are the keywords in the following sentence? grass burns in a meadow among forest at summer sunny day .
forest, grass, meadow

What are the keywords in the following sentence? tall modern buildings overlook an old church with a tower
building, church, tower