question: Allotrophy happens between what temperatures ?
answer: 1,500 °F ( 820 °C ) and 1,600 °F ( 870 °C )
turker_answer: Allotrophy happens between 1,500 °F ( 820 °C ) and 1,600 °F ( 870 °C ) .
rule-based: Allotrophy happens between 1,500 °F ( 820 °C ) and 1,600 °F ( 870 °C .