Update expl.md
Update expl.md

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UniversalDependencies/docs,PhyloStar/UDTelugu,UniversalDependencies/docs,UniversalDependencies/docs,PhyloStar/UDTelugu,PhyloStar/UDTelugu,PhyloStar/UDTelugu,UniversalDependencies/docs,PhyloStar/UDTelugu,PhyloStar/UDTelugu,UniversalDependencies/docs,UniversalDependencies/docs