The BWF's 2019 annual report identifies P V Sindhu as India's first badminton world champion after her women's singles gold in Basel. The source means the senior BWF World Championships title; it does not assert that India had never won a badminton match, an Olympic badminton medal or a junior world title. A broad phrase such as “first world title” needs the sport and organising body before it becomes safe.
Compare three Sindhu cards: Rio 2016 Olympic silver, Basel 2019 BWF world gold and Tokyo 2020 Olympic bronze. The colours and competitions are each correct only in their own row. A distractor may call the Basel gold an Olympic result or put the year 2020 next to the world title. The athlete's familiar name can lure a candidate past those mismatches. Read the stem's event name and date before selecting the person.
Worked example: Sindhu's 2019 BWF world title can support a precisely worded badminton first, but do not generalise it to 'first Indian world champion in any sport'. Compare the sport, event and gender scope in the official BWF record. If a claim names Olympic gold, the competition is wrong. Firsts survive only when the category is written in full.
Active recall: State the complete Sindhu first with country, sport, competition, category and year.
Competition level versus medal
Olympic, world, continental and national results must retain the event name.

Read this visual
Write competition level and exact event before medal colour. A world title cannot be silently counted as an Olympic title.
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