{
    "reference": [
        {
            "keyword": "P3",
            "context": ".I. 1 C.I. 2 C.I. 3 C.I. 4 C.I. 5 C.I. 6 P1 P2 P4 P3 P5 P6 C.I. 8 C.I. 7 P7 P8 C.I.15 P9 P10 P11 P12 P"
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