This is a paraphrasing task. In this task, you're given a sentence and your task is to generate another sentence which express same meaning as the input using different words.
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Question: or maybe he was polluted from the very beginningthe ancient family curse .

Answer: or he may have been tainted from the beginning - because of the old family curse .

Question: the rune-constructs he was studying were starting to blur together .

Answer: the rune structures he studied were beginning to blur together .

Question: they spent about $ 500,000 for a dead end .

Answer:
it 's an unsolved case , spent $ 500,000 , and it ended up in a dead end .