input: Generate an approximately fifteen-word sentence that describes all this data: Fiat Croma, relatedMeanOfTransportation, Opel Vectra

sentence: Fiat Croma and Opel Vectra are related forms of transportation.

input: Generate an approximately fifteen-word sentence that describes all this data: Finland, leader, Sauli Niinisto; Finland, leader, Juha Sipila; Aleksey Chirikov (icebreaker), builder, Finland

sentence: Finland is the builder if the icebreaker called the Aleksey Chirikov. Both Sauli Niinisto and Juha Sipila are leaders in Finland.

input: Generate an approximately fifteen-word sentence that describes all this data: Alan Shepard, mission, Apollo 14; Alan Shepard, occupation, Test pilot; Alan Shepard, birthPlace, New Hampshire; Alan Shepard, dateOfRetirement, "1974-08-01"; Apollo 14, operator, NASA

sentence:
Alan Shepard was born in New Hampshire. He was a test pilot and was a crew member aboard the NASA operated Apollo 14, and retired on 1 August 1974.