Task: Evaluate and classify the sentence into an ordinal scale that captures the inferred mental state of the writer, considering the intensity of sentiments ranging from very positive to very negative. 2: very positive, 1: positive, 0: neutral, -1: negative, -2: very negative.
Sentence: while the mystery surrounding the nature of the boat 's malediction remains intriguing enough to sustain mild interest , the picture refuses to offer much accompanying sustenance in the way of characterization , humor or plain old popcorn fun .
Intensity class: 