Add spaces: Drinfeld'smainachievementsarehisproofoftheLanglandsconjectureforGL(2)overafunctionalfield;andhisworkinquantumgrouptheory.

Answer: Drinfeld's main achievements are his proof of the Langlands conjecture for GL(2) over a functional field; and his work in quantum group theory.

Add spaces: VanDoortalsoworkedforseveralotherEuropeanroyalhouses.

Answer: Van Doort also worked for several other European royal houses.

Add spaces: "Whatwe'retryingtodoisunderstandwhatispreventingpatientsfromstayingontherapytoday.

Answer:
"What we're trying to do is understand what is preventing patients from staying on therapy today.