Table 1. Personal information for interview respondents

Group	No.	Position and affiliation	Career in a year	Date
Group 1	1-1	Senior researcher, ○ ○ Research Institute	16 years	2018. 5. 4
	1-2	Deputy director, ○ ○ Construction Association	12 years	2018. 5. 11
	1-3	Professor, ○ ○ University	8 years	2018. 6. 3
Group 2	2-1	President, ○ ○ Landscape Architecture	10 years	2018. 4. 17
	2-2	Team leader, ○ ○ Landscape Architecture	8 years	2018. 5. 21
	2-3	Manager, ○ ○ Landscape Architecture	5 years	2018. 6. 12