REMOVE

1. mask
2. wood, paint and metal
3. African; West African; Niger …
4. Fine Arts Museums of San Fra …

WHAT

1. Decorative Arts and Utili … (1)
2. Ritual Object (1)
3. wood, paint and metal (1)

WHERE

1. African; West African; Ni … (1)
2. Nigeria (1)

WHO

1. Fine Arts Museums of San … (1)
2. Unknown (1)

WHEN

1. 1900 (1)
2. 1999 (1)
3. 20th century (1)