( ( The program ) ( ( focuses ( on ( tornadoes ( which ( ( ( occur ( in ( all ( 50 states ) ) ) ) and ) ( can ( strike ( at ( ( any time ) ( of year ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN program)) (VP (VBZ focuses) (PP (IN on) (NP (NP (NNS tornadoes)) (SBAR (WHNP (WDT which)) (S (VP (VP (VBP occur) (PP (IN in) (NP (DT all) (CD 50) (NNS states)))) (CC and) (VP (MD can) (VP (VB strike) (PP (IN at) (NP (NP (DT any) (NN time)) (PP (IN of) (NP (NN year))))))))))))) (. .)))
The program focuses on tornadoes which occur in all 50 states and can strike at any time of year.
(ROOT (S (NP (NNS Tornadoes)) (VP (MD can) (VP (VB occur) (PP (IN in) (NP (DT any))))) (. .)))