<transform-to-json format="tsv" url="rawdata_2001.txt">
<transform-to-json format="tsv" url="rawdata_2001.txt" array>
<transform-to-json format="tsv" url="rawdata_2001.txt"> <column name="rank" type="Number"></column> <column name="country" type="String"></column> <column name="value" type="Number?"></column> </transform-to-json>