Q: Remove the spaces from the following sentence: For effective removal of water in oil,
A: [Foreffectiveremovalofwaterinoil,]

Q: Remove the spaces from the following sentence: 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.
A: [Drinfeld'smainachievementsarehisproofoftheLanglandsconjectureforGL(2)overafunctionalfield;andhisworkinquantumgrouptheory.]

Q: Remove the spaces from the following sentence: In fact Hurwitz and Klein complemented each other extremely well for the reasons that Young indicates in :
A: [InfactHurwitzandKleincomplementedeachotherextremelywellforthereasonsthatYoungindicatesin:]

Q: Remove the spaces from the following sentence: He attended the Fourth All-Union Congress of Mathematicians of the USSR in 1961, attending the International Congress of Mathematicians in the same year.
A:
[HeattendedtheFourthAll-UnionCongressofMathematiciansoftheUSSRin1961,attendingtheInternationalCongressofMathematiciansinthesameyear.]