id	keyword
bece-677	housework
bece-677	academic
bece-677	school
bece-677	students
bece-677	education
bece-677	performance
bece-677	school students
bece-677	participation
bece-677	children
bece-677	wang
bece-677	housework education
bece-677	family
bece-677	matching
bece-677	variable