Problem: Is "The fish appeared two years ago." true if "The scientists are studying three species of fish that have recently been found living in the Indian Ocean. They appeared two years ago."?
Answer: yes

Problem: Is "Since Jade always wears a red turban, Alice spotted her quickly." true if "Alice looked for her friend Jade in the crowd. Since she always wears a red turban, Alice spotted her quickly."?
Answer: yes

Problem: Is "Some day they might want to use the magic pebble." true if "When they had eventually calmed down a bit, and had gotten home, Mr. Farley put the magic pebble in an iron safe. Some day they might want to use it , but really for now, what more could they wish for?"?
Answer: yes

Problem: Is "It was a major influence on Ovid's writing." true if "This book introduced Shakespeare to Ovid; it was a major influence on his writing."?
Answer:
no