( ( When ( ( all heat ) ( is ( removed ( from ( an object ) ) ) ) ) ) ( it ( ( will ( be ( ( at ( a temperature ) ) ( called ( absolute zero ) ) ) ) ) . ) ) )
(ROOT (S (SBAR (WHADVP (WRB When)) (S (NP (DT all) (NN heat)) (VP (VBZ is) (VP (VBN removed) (PP (IN from) (NP (DT an) (NN object))))))) (NP (PRP it)) (VP (MD will) (VP (VB be) (VP (ADVP (IN at) (NP (DT a) (NN temperature))) (VBN called) (NP (JJ absolute) (NN zero))))) (. .)))
When all heat is removed from an object it will be at a temperature called absolute zero.
(ROOT (S (NP (NP (DT The) (NN temperature)) (SBAR (WHPP (IN at) (WHNP (WDT which))) (S (NP (DT all) (JJ molecular) (NN motion)) (VP (VBZ has) (VP (VBN ceased)))))) (VP (VBZ is) (VP (VBN called) (NP (JJ absolute) (NN zero)))) (. .)))