source: [lemma=genteel] [lemma=","] [tag=□]
destination: [lemma=genteel] [lemma=","] [tag=JJ]
spec: Whatever name it assumes , table tennis has come a long way since its introduction as a genteel , after-dinner alternative to lawn tennis in 1890s England . When any mass becomes more compact than a certain limit , its own gravity is so strong that the object collapses in on itself to a singular point , a black hole .