Thanks for doing all this.

I have a question regarding coverage, and if you tested your manual work's coverage.

Looking at train, 7triplets, first sentence (first file I open), I see in the first sentence:

AGENT-1 was born in PATIENT-4 and is from the U.S. . AGENT-1 graduated in 1955 from PATIENT-3 . AGENT-1 worked as PATIENT-2 and for NASA in PATIENT-6 . AGENT-1 spent PATIENT-5 in space and is now retired .

U.S. should be replaced with PATIENT-1, the entire in 1955 from UT Austin with a B.S with PATIENT-3 and retired should be replaced with PATIENT-7.

Would you say that hese kind of problems are to be expected? Did you do any coverage test to make sure you didn't leave anything? (for 2 of these cases above, an automated test can catch them)