from: rcfile
to: pig
evidence:
 - file: "rcfile/src/main/java/com/twitter/elephantbird/mapreduce/input/RCFileProtobufTupleInputFormat.java"
   contains "import com.twitter.elephantbird.pig.util.ProtobufToPig;"

from: rcfile
to: pig
evidence:
 - file: "rcfile/src/main/java/com/twitter/elephantbird/mapreduce/input/RCFileThriftTupleInputFormat.java"
   contains "import com.twitter.elephantbird.pig.util.ThriftToPig;"