Category Nuances for sexual_intercourse:

• serious,
• sexual,
• increased,
• natural,
• important,
• behavioral,
• heavy,
• adult,
• mechanical,
• strenuous,
• usual,
• pleasurable,
• private,
• biological,
• physical,

Simple Categories for sexual_intercourse:

• activity,
• response,
• sex,
• knowledge,
• event,
• cause,
• process,