Determine if the lesion is Upper Motor Neuron or Lower Motor Neuron and Right/Left side

Left facial droop, upper face is spared
Answer : Right Upper Motor Neuron

Right hemiplegia of the upper and lower face
Answer :Right Lower Motor Neuron

Right facial droop, upper face is spared
Answer : Left Upper Motor Neuron

Left hemiplegia of the upper and lower face
Answer : Left Lower Motor Neuron