Problem: Generate a sentence that contains a fact.
Sentence: if a living thing dies then that living thing is dead

Problem: Generate a sentence that contains a fact.
Sentence: if two equal forces in opposite directions act on an object then that object will stay in the same place

Problem: Generate a sentence that contains a fact.
Sentence: the amount of daylight is least on the winter solstice

Problem: Generate a sentence that contains a fact.
Sentence:
combining two substances chemically causes chemical reactions