question: What is the base speed of Ektachrome P800/1600 and Fujichrome P1600 ?
answer: ISO 400
turker_answer: The base speed of Ektachrome P800/1600 and Fujichrome P1600 is ISO 400 .
rule-based: The base speed of Ektachrome P800/1600 and Fujichrome P1600 is ISO 400 .