Knowledge$-$base describing when the car should brake?

$($ PersonInFrontOfCar $$ Brake $)$

$((($ YellowLight $$ Policeman $)($Slippery $))$ Brake $)$

$($ Policecar $$ Policeman $)$

$($ Snow $$ Slippery $)$

$($ Slippery $$Dry $)$

$($ RedLight $$ Brake $)$

$($ Winter $$ Snow $)$

Observation from sensors:

YellowLight $$RedLight $$Snow $$ Dry $$ Policecar $$PersonInFrontOfCar

What can we infer?

Given the observations should the car apply brakes?