    Sentence 1:- Where. was” Tesla studying.  when ‘he ‘started playing cards and  billiards?    Seritence "2::On. Gne occasion: at: his   laboratory; Tesla. worked. for a: period. of:  “B4_hours. without. sleep or rests008.  Kenneth Swezey;-a journalist whom Tesla  had.. befriended; confirmed that Tesla   rarely slept.