premise: Randall has only visited Marshall Islands, Miguel has only visited Moldova, Julio has only visited Belgium, Ray has only visited Colombia, Jeremy has only visited Nicaragua, Johnnie has only visited Tunisia, Ronnie has only visited Sweden, Kurt has only visited Dominican Republic, Freddie has only visited Togo, Edwin has only visited Slovakia, Christopher has only visited Saint Lucia, Clifton has only visited Cameroon
hypothesis: Jeremy didn't visit Ecuador