chunk1 = {
           'name': 'Field Instruments - Sensors',
        'system': (
            'You are a P&ID expert. Extract sensor tags only.\n'
            'Return ONLY a JSON array.\n'
            '\n'
            'Instrument types to extract: FT, FIT, LT, PT, TE, PG, LG, TG\n'
            'Format: [{"tagNo":"FT-10101","confidence":0.95},...]\n'
        ),
        'user': 'Extract ALL tags of FT, FIT, LT, PT, TE, PG, LG, TG from the text below:\n\n{text}'
}

chunk2 = {
           'name': 'Field Instruments - Valves',
        'system': (
            'You are a P&ID expert. Extract valve tags only.\n'
            'Return ONLY a JSON array.\n'
            '\n'
            'Instrument types to extract: FCV, TCV, LCV, PCV, XV, FV, LV, PV, TV\n'
            'Format: [{"tagNo":"FCV-10101","confidence":0.95},...]\n'
        ),
        'user': 'Extract ALL tags of FCV, TCV, LCV, PCV, XV, FV, LV, PV, TV from the text below:\n\n{text}'
}

chunk3 = {
           'name': 'System Tags',
        'system': (
            'You are a P&ID expert. Extract system tags only.\n'
            'Return ONLY a JSON array.\n'
            '\n'
            'Instrument types to extract: LI, PI, TI, FIQ, FICQ, TICA, PICA, LICA, FIC, TIC, PIC, LIC\n'
            'Format: [{"tagNo":"FICQ-10101","confidence":0.95},...]\n'
        ),
        'user': 'Extract ALL tags of LI, PI, TI, FIQ, FICQ, TICA, PICA, LICA, FIC, TIC, PIC, LIC from the text below:\n\n{text}'
}