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["Activity","Immediate Predeccessor","Time"]
["A","-",2.0]
["B","-",3.0]
["C","-",4.0]
["D","-",2.0]
["E","B",2.0]
["F","C",2.0]
["G","A,D",4.0]
["H","G",6.0]
["I","E",6.0]
["J","G,I",5.0]
["K","C",3.0]
["L","J",4.0]
["M","K",3.0]
["N","M",3.0]
["O","N",2.0]
["P","H,M",3.0]
["W","O",2.0]
["R","W",2.0]