Guests at the ceremony were able to see solar energy in action at displays that used the sun to pump water, to play music and refrigerate drinks.
(Guests at the ceremony; were; able to see solar energy in action at displays) (Guests at the ceremony; to see; solar energy; L:in action at displays) (displays; used; the sun; to pump water, to play music and refrigerate drinks)
Guests at the ceremony Guests at the ceremony displays
were to see used
able to see solar energy in action at displays
solar energy L:in action at displays
the sun to pump water, to play music and refrigerate drinks