Here are two sentences:

Analysts attributed the increase in part to negative news from bankrupt competitor WorldCom Inc . WCOEQ.PK and talk that AT & T could be a takeover target .

Analysts attributed its rise to negative news from bankrupt competitor WorldCom Inc . < WCOEQ.PK > and talk that AT & T could be a takeover target , among other factors .

yes

Here are two sentences:

Those searches have not found stockpiles of chemical and biological weapons or significant evidence of a nuclear weapons program .

Alleged stockpiles of chemical and biological weapons have not turned up , nor has significant evidence of a nuclear-weapons program .

yes

Here are two sentences:

The time was about 4 a.m. on March 18 , just hours before the first pinpoint missiles rained down on the capital .

The seizure occurred at 4am on March 18 , just hours before the first American air assault .
no