{"yield":134,"variety":"A","fertilizer":5}
{"yield":140,"variety":"A","fertilizer":10}
{"yield":146,"variety":"A","fertilizer":15}
{"yield":153,"variety":"A","fertilizer":20}
{"yield":138,"variety":"B","fertilizer":5}
{"yield":142,"variety":"B","fertilizer":10}
{"yield":145,"variety":"B","fertilizer":15}
{"yield":147,"variety":"B","fertilizer":20}