{"query": "Vitamin c — recommended daily allowance", "count": 17, "results": [{"id": "card_ref_rda_vitamin_c", "title": "Vitamin c — recommended daily allowance", "shelf": "nutrition", "surface": "secular", "snippet": "Vitamin c — recommended dietary allowance by life stage: child 9–13 45 mg/day, adolescent 14–18 male 75 mg/day, adolescent 14–18 female 65 mg/day, adult male 90 mg/day, adult female 75 mg/day, pregnan", "authority_tier": "reference", "source": "Verified reference — nutrition", "generated": false}, {"id": "card_theory_real_estate_valuation", "title": "Real-estate valuation (cap rate, DCF)", "shelf": "theories", "surface": "secular", "snippet": "Real-estate valuation (cap rate, DCF) — an engine domain that can touch it: real_estate. Calibration: seals — cap rate, NOI and discounted cash flows compute. CAP RATE = net operating income ÷ price. 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A United States federal publication, public domain (17 USC 105). Th", "authority_tier": "reference", "source": "US Army field & technical manuals (PD, 17 USC 105)", "generated": false}, {"id": "card_src_fed_officialtabledi00deptgoog", "title": "Official table of distances for the guidance of disbursing officers of the army charged with payment of money allowances for travel", "shelf": "practical", "surface": "secular", "snippet": "Official table of distances for the guidance of disbursing officers of the army charged with payment of money allowances for travel. A United States federal publication, public domain (17 USC 105). Th", "authority_tier": "reference", "source": "US Army field & technical manuals (PD, 17 USC 105)", "generated": false}, {"id": "card_src_rfc_9756", "title": "RFC9756 — Update to the IANA Path Communication Element Protocol (PCEP) Numbers Registration Procedures and the Allowance of Experimental Error Codes", "shelf": "rfcs", "surface": "secular", "snippet": "RFC9756: Update to the IANA Path Communication Element Protocol (PCEP) Numbers Registration Procedures and the Allowance of Experimental Error Codes (March 2025). 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