There’s only one valid interpretation.
To you.
If a friend asked you if you’d seen a movie but you’d only watched half of it […] you would say something to the effect of “I’ve seen part of it.”
Or “Yes, but only part of it.” Which is indeed what I actually said. The thread rules did not specifically stipulate otherwise, nor does Ender’s reply regarding this debate seem to indicate an either hard nor fast rule regarding such exists.