rtokens: Under the proposal , only imports of export-quality avocados growing in approved orchards in Michoacan , Mexico , the country 's main avocado area , would be allowed .
pos: NNS IN DT NN VB DT NNS IN DT NNP NNS CC VBP DT NN VBZ JJ NNS VBN IN PRP TO VB DT JJ NN TO JJ NNS .
tokens: Proponents of the plan discount the worries of the U.S. growers and say the plan has enough safeguards built into it to eliminate any significant threat to American producers .
ltokens: Mexican officials contend that there is no scientific basis for the ban , and that it is illegal under international trading rules of the World Trade Organisation .