Definition: In this task, you're given two sentences. Indicate if the first sentence clearly entails the second sentence (i.e., one can conclude the 2nd sentence by reading the 1st one). Indicate your answer with '1' if the first sentence entails the second sentence, otherwise answer with '0'.
Input: Sentence 1: The ivory ban has been successful. Demand for ivory has dropped and elephant populations expanded dramatically in areas where they were virtually extinct. Sentence 2: The ban on ivory trade has been effective in protecting the elephant from extinction.

1