Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.

Q: Just "assembled" the bat cave for my 5 year old. Pathetic construction and workmanship -- half of the gimmics don't work. Another pile of injection-molded plastic parts and stickers that I get to assemble -- what is this thing -- $4 of raw materials + $2 of shipping + $10 of marketing? Garbage. Shame on you Mattel, the only thing worse is the batman figures with the batarangs that take 30 minutes and a blowtorch to get out of the packaging. This batcave will collapse and die within hours of play, I'm sure of it. GARBAGE!

A: Negative
****
Q: A classic story based on history. One of Hypatia's crimes appears to have been ready to provide a hypothesis of a heliocentric universe, long before Copernicus and with a much worse response from the Christian community.

A: Positive
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Q: I found this cd on the shelf at my work. I'm listening to it right now. Sweet instrumentals that make me want to dance around. It reminds me of sugarplum fairies creating music in the 70's. The sound is light. The lyrics are few but this album isn't about the lyrics. It's about the rhythm it creates. It's a pleasant album.

A:
Positive
****