"Gold extends gain, silver too rises" Does the news headline talk about price staying constant? No

"amex gold bugs index ends lower at 308.37 after 315.4 high" Does the news headline talk about price in the future? No

"Gold futures settle higher after a two session decline" Does the news headline talk about price in the past? Yes

"feb. gold down $25.70 or 1.5%, ends at $1,648.90" Does the news headline talk about price? Yes

"Gold, silver edge higher ahead of U.S. jobless claims, housing data" Does the news headline talk about price in the past? Yes

"August gold ends at $1,326.70/oz, up $5.90, or 0.5%, on Comex" Does the news headline talk about a general event (apart from prices) in the past?