Question: What was the Filipino-owned regional boutique airline company, which owns an airstrip at El Nido Airport, formerly known as?
Sentence (from "El Nido Airport"): El Nido Airport (Filipino: "Paliparan ng El Nido" ) (IATA: ENI) , also known as Lio Airport, is an airport serving the general area of El Nido, located in the province of Palawan in the Philippines.
Relevant evidence: Yes