Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Starts Well; Goes Nowhere

The Wells time machine premise is great. The archaeological theme is handled well. The first 125 pages or so are pretty absorbing. Then it takes a dive. More and more of the same maddeningly slow-moving journal entries, mostly describing the greenery (though I did like Graham). You think it's going to get back up to speed or at least offer more than the narrator continuing to mourn lost love, lost friendship, lost parents -- but even when things actually begin to happen around page 221, it's not nearly as interesting as the first part of the book. A wasted opportunity.